Rear Delt Fly Workout Plan + Full Exercise Guide!

Back and Rear Deltoid Hypertrophy Workout With Rear Delt Flies

1. Lat Pulldown: 3 sets x 8-12 reps | Rest 2 minutes.
2. Chest-Supported Row: 3 sets x 8-12 reps | Rest 2 minutes.
3. Bent-Over Dumbbell Rear Delt Fly: 3 sets x 12-20 reps | Rest 60-90 seconds.
4. Cable Lateral Raise: 3 sets x 12-20 reps | Rest 60-90 seconds.
5. Incline Dumbbell Curl: 3 sets x 8-12 reps | Rest 90 seconds.
6. Rope Hammer Curl: 2 sets x 10-15 reps | Rest 60-90 seconds.

1. Lat Pulldown

Working sets: 3

Repetitions: 8-12

Rest: 2 minutes

Primary muscles: Latissimus dorsi, teres major, and elbow flexors, with assistance from the upper-back muscles.

The lat pulldown begins this workout because it is a demanding compound pulling exercise.

Adjust the thigh pad so your lower body remains securely positioned.

Choose a comfortable overhand or neutral grip.

Begin with your arms extended overhead.

Pull the attachment toward your upper chest by moving your elbows downward.

Allow the shoulder blades to move naturally.

Maintain a relatively stable torso.

Return the attachment gradually to a comfortable overhead position.

Choose resistance that allows 8-12 controlled repetitions with approximately 1-2 repetitions in reserve.

Avoid swinging backward or using substantial torso momentum.

The exercise provides vertical pulling work before the more targeted posterior shoulder movements.

Keep your grip and range consistent when tracking progress.

2. Chest-Supported Row

Working sets: 3

Repetitions: 8-12

Rest: 2 minutes

Primary muscles: Latissimus dorsi, trapezius, rhomboids, posterior deltoids, and elbow flexors.

The chest-supported row provides horizontal pulling while reducing unsupported torso stabilization demands.

Adjust the machine or incline bench so your chest remains firmly supported.

Begin with your arms extended toward the resistance.

Pull the handles toward your torso by moving your elbows backward.

Allow your shoulder blades to retract naturally.

Pause briefly near the top if useful.

Lower gradually without lifting your chest from the support.

Choose resistance that allows approximately 1-2 repetitions in reserve.

Avoid excessive momentum or using a very short range solely to move heavier weight.

This exercise trains the upper back and posterior deltoids before the direct rear delt fly sets.

Because the rear deltoids already assist during rowing, select realistic resistance for the isolation exercise that follows.

Maintain a consistent elbow path and machine setup across sessions.

3. Bent-Over Dumbbell Rear Delt Fly

Working sets: 3

Repetitions: 12-20

Rest: 60-90 seconds

Primary muscles: Posterior deltoids, with assistance from the trapezius, rhomboids, and rotator cuff.

The Bent-Over Dumbbell Rear Delt Fly is the main posterior shoulder isolation exercise in this workout.

Stand with your feet approximately hip-width apart.

Hold a relatively light dumbbell in each hand.

Bend your knees slightly and push your hips backward to establish a controlled forward torso inclination.

Allow the dumbbells to hang beneath your shoulders.

Maintain a slight elbow bend.

Raise your upper arms outward and backward through shoulder horizontal abduction.

Avoid aggressively shrugging or pinching the shoulder blades together.

Stop when your upper arms reach a comfortable position approximately in line with your torso.

Lower gradually until the dumbbells return beneath your shoulders.

Choose resistance that allows 12-20 controlled repetitions with approximately 1-2 repetitions in reserve.

Avoid turning the movement into a row by repeatedly bending the elbows.

Do not jerk the torso upward to complete difficult repetitions.

Because the upper back has already worked during pulldowns and rows, use resistance that allows strict posterior deltoid training.

If maintaining the bent-over position becomes tiring, substitute a chest-supported dumbbell rear delt fly.

Record dumbbell weight, repetitions, torso angle, and movement quality.

Increase resistance only after reaching the upper repetition target with consistent technique.

4. Cable Lateral Raise

Working sets: 3

Repetitions: 12-20

Rest: 60-90 seconds

Primary muscles: Lateral deltoids, with assistance from the supraspinatus and shoulder blade stabilizers.

The cable lateral raise provides direct side-shoulder training after the posterior deltoid work.

Set a cable pulley near the bottom of the machine.

Stand sideways to the pulley and hold the handle with your working arm.

Maintain a stable stance and a small elbow bend.

Raise your arm outward through a comfortable arc.

Continue toward approximately shoulder height.

Lower gradually without using torso momentum.

Choose resistance that allows 12-20 controlled repetitions with approximately 1-2 repetitions in reserve.

Avoid shrugging excessively or swinging the handle upward.

Complete the prescribed sets for both shoulders.

The cable lateral raise trains shoulder abduction, while the rear delt fly emphasizes horizontal abduction.

Together, these exercises provide complementary deltoid training without another heavy compound press.

Maintain the same pulley height and movement path when tracking progression.

5. Incline Dumbbell Curl

Working sets: 3

Repetitions: 8-12

Rest: 90 seconds

Primary muscles: Biceps brachii, with assistance from the brachialis and brachioradialis.

The incline dumbbell curl adds direct elbow-flexor training after the compound pulling and shoulder isolation exercises.

Set an adjustable bench to approximately 45-60 degrees.

Sit with your back supported and allow the dumbbells to hang beside your body.

Begin with your elbows comfortably extended.

Curl the dumbbells upward through elbow flexion using a supinated or naturally supinating grip.

Keep your upper arms relatively stable.

Lower gradually without swinging the shoulders forward.

Choose resistance that allows 8-12 repetitions with approximately 1-2 repetitions in reserve.

Avoid using excessive weight that requires shoulder movement or a shortened range.

The incline position places the biarticular biceps at a relatively lengthened shoulder position.

This provides direct biceps training after the indirect elbow-flexor work from pulldowns and rows.

Record bench angle, dumbbell weight, and repetitions to track progress accurately.

6. Rope Hammer Curl

Working sets: 2

Repetitions: 10-15

Rest: 60-90 seconds

Primary muscles: Brachialis, brachioradialis, and biceps brachii.

The rope hammer curl finishes the session with additional neutral-grip elbow-flexion work.

Attach a rope handle to a low cable pulley.

Stand upright with your elbows comfortably positioned near your torso.

Grip the rope ends with your palms facing inward.

Bend your elbows to raise the attachment.

Maintain relatively stable upper arms and wrists.

Lower gradually without allowing the weight stack to pull the rope downward abruptly.

Choose resistance that allows 10-15 controlled repetitions with approximately 1-2 repetitions in reserve.

Avoid leaning backward or swinging the shoulders.

The neutral grip changes elbow-flexor mechanics compared with the supinated incline curls.

Because the elbow flexors are already fatigued, two controlled working sets provide additional training without unnecessary volume.

Increase resistance gradually when all prescribed repetitions remain strict.

How to Warm Up Before This Rear Delt Fly Workout

Begin with approximately 5-10 minutes of general and movement-specific preparation.

Start with 3-5 minutes of light walking, cycling, or another comfortable activity.

Then perform controlled upper-body movements such as:

• Gentle shoulder circles.
• Comfortable shoulder blade movements.
• Light band pull-aparts.
• Light cable or dumbbell rear delt flies.
• Easy elbow flexion and extension.
• Controlled hip hinges.

Before lat pulldowns, gradually increase resistance.

For example, if your planned working resistance is 50 kg:

1. 20 kg x 10 repetitions.
2. 30 kg x 6 repetitions.
3. 40 kg x 3 repetitions.
4. Begin working sets at 50 kg.

These are example warm-up loads rather than mandatory percentages.

Before rear delt flies, perform approximately 8-10 controlled repetitions with lighter dumbbells.

Use this preparation set to establish torso angle, elbow bend, and shoulder movement.

Avoid creating substantial rear delt fatigue before your working sets.

If using chest-supported equipment, confirm that the bench angle and chest position allow free arm movement.

The warm-up should prepare the shoulders and upper back without reducing workout performance.

How Hard Should You Train During This Back and Rear Delt Workout?

Most working sets should finish relatively close to muscular failure while maintaining controlled technique.

Repetitions in reserve (RIR) describes how many additional technically sound repetitions you estimate you could complete before muscular failure.

Use these practical effort targets:

• Lat Pulldown: Approximately 1-2 RIR without excessive torso swinging.
• Chest-Supported Row: Approximately 1-2 RIR while maintaining chest support.
• Bent-Over Dumbbell Rear Delt Fly: Approximately 1-2 RIR without excessive elbow bending or torso movement.
• Cable Lateral Raise: Approximately 1-2 RIR with controlled shoulder abduction.
• Incline Dumbbell Curl: Approximately 1-2 RIR without shoulder swinging.
• Rope Hammer Curl: Approximately 1-2 RIR while maintaining a neutral grip.

The first two exercises are compound pulling movements involving several muscle groups.

They require coordinated force production from the back and elbow flexors.

The rear delt fly and lateral raise are isolation exercises.

These can generally be performed close to muscular failure because the external resistance is relatively modest.

However, performing every set to absolute failure is unnecessary.

For rear delt flies, technical failure occurs when additional repetitions require substantial torso swinging, excessive shoulder shrugging, or a large change in elbow angle.

That is a practical point to end the set.

For cable lateral raises, stop when momentum replaces controlled shoulder movement.

For curls, stop when the upper arms begin moving excessively to lift the resistance.

The objective is challenging muscular effort with repeatable technique.

How to Progress This Rear Delt Fly Workout Over Several Weeks

Use double progression to increase repetitions and resistance while maintaining consistent exercise mechanics.

Weeks 1-2: Establish your baseline.

Choose weights that allow controlled repetitions near the lower end of each exercise's range.

For rear delt flies, begin with dumbbells that allow approximately three sets of 12-15 strict repetitions.

Record resistance, repetitions, torso angle, elbow position, and estimated RIR.

Use consistent exercise setups.

Weeks 3-4: Increase repetitions.

Maintain the same dumbbell resistance while gradually increasing repetitions.

For example:

• Week 1: 15, 14, and 12 repetitions.
• Week 2: 17, 15, and 13 repetitions.
• Week 3: 19, 17, and 15 repetitions.
• Week 4: 20, 20, and 20 repetitions.

Only count rear delt fly repetitions performed with consistent shoulder movement.

For lat pulldowns, chest-supported rows, and incline curls, progress toward the upper end of their prescribed ranges.

Weeks 5-6: Increase resistance when ready.

Once all three rear delt fly sets reach twenty repetitions with the intended RIR, increase dumbbell resistance by the smallest practical increment.

Your repetitions may return closer to twelve.

Continue progressing gradually.

For cable lateral raises, increase resistance after reaching twenty strict repetitions across all working sets.

For incline curls and rope hammer curls, increase resistance after reaching the upper repetition target without using momentum.

If a heavier dumbbell causes excessive elbow bending or torso swinging, return to the previous load.

If performance declines across several workouts, review total pulling and shoulder volume.

Temporarily reducing accessory sets or training farther from failure may help restore consistent performance.

Track improvements through comparable resistance, range, and technique rather than heavier weights alone.

How to Fit This Rear Delt Fly Workout Into a Four-to-Six-Day Training Split

This workout can serve as a back-and-shoulder session within a four-to-six-day weekly resistance training routine.

For a four-day upper/lower split, use it as one upper-body session while distributing chest, pressing, and additional arm training across the second upper-body day.

For a five- or six-day push-pull-legs routine, it can serve as a pull-focused session with additional deltoid isolation.

A practical weekly arrangement could include:

• Pull session: Lat pulldowns, chest-supported rows, rear delt flies, lateral raises, and biceps curls.
• Push session: Chest presses, shoulder presses, and triceps exercises.
• Lower-body session: Quadriceps, hamstrings, glutes, and calves.
• Additional upper-body session: Complementary back, chest, shoulder, or arm training based on recovery.

This workout includes three vertical pulling sets and three horizontal rowing sets.

Both compound movements train the back, with the chest-supported row also contributing to posterior deltoid loading.

Rear delt flies add three direct posterior shoulder sets.

Cable lateral raises provide three direct lateral deltoid sets.

Incline dumbbell curls contribute three direct biceps sets.

Rope hammer curls add two neutral-grip elbow-flexor sets.

Because posterior deltoids already contribute to rows, count this overlapping work when planning weekly volume.

If your program includes several heavy rowing variations, you may not need a large amount of additional rear delt isolation.

If posterior shoulder development is a specific priority, direct rear delt training can be distributed across two weekly sessions.

For example, perform three sets of dumbbell rear delt flies during one workout and two sets of reverse pec deck during another.

When practical, allow approximately 48-72 hours between demanding sessions involving the same muscle groups, adjusting according to total workload and recovery.

If rear delt fly repetitions and resistance improve while shoulder comfort remains stable, maintain the current volume.

If performance declines or shoulder fatigue accumulates, reduce overlapping rowing or isolation sets before adding more exercises.

The priority is consistent posterior deltoid development through controlled shoulder horizontal abduction, complementary upper-back training, and recoverable weekly volume.

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What Is the Rear Delt Fly and Is It Effective for Building Muscle?

The Rear Delt Fly is an upper-body isolation exercise that primarily trains the posterior deltoids by moving the upper arms outward and backward against resistance.

It is commonly performed with dumbbells in a bent-over position, although seated, chest-supported, cable, and machine variations are also available.

The main movement is shoulder horizontal abduction. This means moving the upper arms outward and backward relative to the torso.

The posterior deltoids produce much of the intended shoulder movement, while the trapezius, rhomboids, and rotator cuff contribute to movement control and stabilization.

Unlike rowing exercises, the rear delt fly uses relatively little dynamic elbow flexion.

Your elbows remain slightly bent as the arms move outward.

This makes the exercise useful for emphasizing the posterior shoulders without requiring substantial biceps involvement.

Rear delt flies are effective for building posterior deltoid muscle when performed with suitable resistance, a productive range of motion, and progressive overload.

They are particularly useful for people whose upper-body training already includes substantial chest pressing and front-shoulder work.

Bench presses, incline presses, and overhead presses predominantly challenge the chest, anterior deltoids, and triceps.

Rear delt flies provide additional training for the posterior deltoids through a different shoulder movement.

However, the exercise is not mandatory for shoulder hypertrophy.

Rows, reverse pec deck exercises, and other appropriate pulling movements can contribute to posterior deltoid development.

The main advantage of a rear delt fly is its ability to provide relatively direct shoulder training without another heavy compound exercise.

Its main limitation is that excessively heavy resistance can cause the upper back and torso to compensate for the intended posterior deltoid movement.

For hypertrophy, a controlled set of twelve repetitions with appropriate resistance is generally more useful than a heavier set performed mainly through swinging and shoulder blade retraction.

What Are the Main Benefits of Rear Delt Flies?

Rear delt flies provide targeted posterior shoulder training with relatively low equipment requirements and manageable whole-body fatigue.

Their main benefits include:

• Posterior deltoid hypertrophy: The exercise directly challenges the muscles at the back of the shoulders.
• Shoulder training variety: It trains horizontal shoulder abduction rather than another pressing or vertical pulling pattern.
• Minimal elbow-flexor demands: The biceps play a smaller dynamic role than during conventional rows.
• Adjustable resistance: Dumbbells, cables, and machines allow progressive loading.
• Unilateral options: Single-arm variations make it possible to train each shoulder independently.
• Reduced stabilization options: Chest-supported and machine variations can limit torso movement.
• Workout flexibility: Rear delt flies fit after back exercises, shoulder presses, or other upper-body movements.
• Precise accessory training: The exercise can add posterior deltoid volume without requiring another demanding compound lift.

One practical benefit is that the movement is easy to include after a challenging back workout.

For example, rows and pulldowns can be followed by two or three sets of rear delt flies to provide more direct posterior shoulder work.

However, additional rear delt volume is not automatically necessary if the existing program already provides sufficient stimulus.

The posterior deltoids receive some training during rows, particularly when the upper arms travel outward.

Rear delt flies are most useful when you want to prioritize this muscle group or add a more focused movement pattern.

Another benefit is equipment flexibility.

Dumbbells require little setup, while cables allow adjustments to resistance direction.

Reverse pec deck machines provide torso support and a guided movement path.

These differences can make one variation more suitable than another depending on available equipment and individual comfort.

What Muscles Does the Rear Delt Fly Work?

The Rear Delt Fly primarily trains the posterior deltoids, with contributions from the middle trapezius, rhomboids, and rotator cuff muscles.

The relative contribution of each muscle depends on the upper-arm path, shoulder blade movement, grip orientation, and equipment used.

Posterior Deltoid

The posterior deltoid is the main intended muscle of the rear delt fly.

It is located along the back of the shoulder and originates from the spine of the scapula.

Its functions include shoulder horizontal abduction, shoulder extension, and external rotation.

During a rear delt fly, the posterior deltoid helps move the upper arm outward and backward.

For example, when performing a bent-over dumbbell rear delt fly, the upper arms move away from the midline as the weights rise.

The posterior deltoids produce force to accomplish this shoulder movement.

During the lowering phase, they help control the return of the arms toward the starting position.

The exercise is especially useful because it trains the posterior deltoids through a movement distinct from pressing.

However, the rear delt fly does not completely isolate the posterior deltoid.

Other muscles contribute to shoulder and scapular movement.

To keep the posterior deltoid as the main target, prioritize upper-arm movement rather than deliberately squeezing the shoulder blades together as forcefully as possible.

Middle Trapezius

The middle trapezius contributes to scapular retraction, which means drawing the shoulder blades toward the spine.

During rear delt flies, the shoulder blades move naturally as the upper arms travel outward.

The middle trapezius helps control this movement.

Its involvement can become more pronounced when the lifter emphasizes shoulder blade retraction.

However, a rear delt fly should not be performed exclusively by squeezing the shoulder blades together.

That would shift the exercise toward a scapular retraction movement rather than emphasizing shoulder horizontal abduction.

For posterior deltoid training, allow natural shoulder blade movement without making exaggerated retraction the main objective.

Rhomboids

The rhomboid major and rhomboid minor help retract and stabilize the scapulae.

They contribute when the shoulder blades move toward the spine during the exercise.

Their involvement depends partly on the movement path.

A rear delt fly performed with substantial scapular retraction may place greater demands on the rhomboids.

A variation emphasizing upper-arm movement with controlled scapular motion can provide more direct posterior deltoid training.

The rhomboids are supporting muscles rather than the primary intended hypertrophy target.

For more direct rhomboid and middle trapezius training, chest-supported rows and other rowing variations may be useful.

Rotator Cuff Muscles

The rotator cuff helps control the shoulder joint during rear delt flies.

Its four muscles are:

• Supraspinatus: Assists with shoulder abduction and joint stabilization.
• Infraspinatus: Contributes to external rotation and shoulder stability.
• Teres minor: Assists with external rotation and stabilization.
• Subscapularis: Contributes to internal rotation and stabilization.

The infraspinatus and teres minor may contribute more dynamically depending on shoulder rotation and the chosen movement path.

However, rear delt flies are not identical to dedicated external rotation exercises.

The primary movement remains shoulder horizontal abduction.

The rotator cuff helps maintain joint control as the upper arms move against resistance.

Spinal Erectors, Core, and Arm Stabilizers

During standing bent-over dumbbell rear delt flies, the spinal erectors and abdominal muscles help maintain the torso position.

The glutes and hamstrings contribute to holding the hip hinge.

The forearm muscles maintain grip.

The triceps and other upper-arm muscles help preserve a relatively consistent elbow angle.

These muscles mainly provide stabilization.

A chest-supported variation reduces the need to maintain an unsupported torso position.

This may make it easier to concentrate on the posterior deltoids, particularly after demanding back exercises.

However, the supported variation is not automatically superior for muscle growth.

Both supported and unsupported rear delt flies can be effective when the target muscles receive sufficient challenging resistance.

How to Set Up the Bent-Over Dumbbell Rear Delt Fly

The bent-over dumbbell rear delt fly requires two dumbbells and enough space to move the arms outward without interference.

1. Choose your dumbbells. Select relatively light resistance that allows approximately 12-20 controlled repetitions.
2. Position your feet. Stand approximately hip-width apart with stable foot pressure.
3. Bend your knees slightly. Maintain a comfortable unlocked knee position.
4. Hinge at your hips. Push the hips backward and incline your torso forward.
5. Maintain a controlled back position. Avoid unnecessary spinal movement.
6. Allow your arms to hang. Hold the dumbbells beneath your shoulders.
7. Choose your grip. A neutral grip with the palms facing inward is a practical starting position.
8. Bend your elbows slightly. Establish an elbow angle you can maintain throughout the set.
9. Brace your torso lightly. Keep your hip hinge relatively stable.
10. Check your movement clearance. Make sure the dumbbells can travel outward without contacting surrounding equipment.

The torso is commonly positioned near horizontal, although a somewhat more upright angle may be appropriate.

The exact angle influences the relationship between gravity and the shoulder movement.

A more upright torso can change the resistance demands and reduce the intended horizontal-abduction emphasis.

For a conventional bent-over rear delt fly, use a sufficiently forward-inclined torso to create the intended movement.

If maintaining the hip hinge becomes tiring, use a chest-supported bench instead.

How to Perform the Rear Delt Fly Step by Step

The Rear Delt Fly is performed by moving the upper arms outward against resistance while maintaining a relatively consistent elbow angle.

1. Stand with your feet stable and a dumbbell in each hand.
2. Push your hips backward to establish a controlled forward torso inclination.
3. Allow the dumbbells to hang beneath your shoulders.
4. Maintain a slight bend in the elbows.
5. Begin raising your upper arms outward and backward.
6. Keep the elbow angle relatively consistent as the dumbbells move.
7. Allow your shoulder blades to move naturally without exaggerated retraction.
8. Raise the dumbbells until your upper arms reach a comfortable position approximately in line with your torso.
9. Pause briefly near the top if useful.
10. Lower the dumbbells gradually to the starting position.

Repeat without allowing the torso to swing upward.

A useful cue is to think about moving your upper arms outward rather than lifting the dumbbells with your hands.

The dumbbells are simply the resistance.

The posterior deltoids produce force to move the upper arms.

Avoid bending the elbows substantially during the lifting phase.

Doing so shortens the lever and changes the exercise toward a rowing pattern.

The weights should move smoothly throughout the set.

If you need to jerk your torso upward to complete repetitions, reduce resistance.

How Far Should You Raise Your Arms During Rear Delt Flies?

Raise your upper arms until they reach a substantial comfortable horizontal-abduction range without excessive torso movement or shoulder discomfort.

During a bent-over dumbbell rear delt fly, a useful endpoint is often when the upper arms approach the level of the torso.

The exact height depends on shoulder mobility, elbow angle, and individual anatomy.

You do not need to raise the dumbbells far above your torso.

Forcing excessive backward movement may introduce additional shoulder blade retraction or other compensation.

The main objective is a controlled shoulder movement.

A useful range includes:

• Arms beginning beneath the shoulders.
• Elbows remaining slightly bent.
• Upper arms moving outward.
• Shoulder blades moving naturally.
• A comfortable top position.
• Gradual lowering into the next repetition.

Avoid shortening the range solely to lift heavier dumbbells.

However, a modified range may be appropriate when shoulder mobility or comfort limits movement.

The best endpoint is one you can repeat consistently without changing your torso position.

Should Your Shoulder Blades Squeeze Together During Rear Delt Flies?

Your shoulder blades should move naturally during rear delt flies, but deliberately maximizing scapular retraction is not necessary for posterior deltoid training.

The posterior deltoids move the upper arms through shoulder horizontal abduction.

The rhomboids and middle trapezius contribute to pulling the shoulder blades toward the spine.

Both actions may occur during the exercise.

However, they are not identical.

If you focus primarily on pinching the shoulder blades together, more of the movement may occur through scapular retraction.

This can shift the exercise toward greater upper-back involvement.

For posterior deltoid emphasis, focus on moving your elbows outward while allowing the shoulder blades to follow naturally.

Do not attempt to lock the scapulae completely in place.

Normal scapular movement is part of shoulder function.

The objective is to avoid exaggerated retraction as the main method of moving the resistance.

Should Your Elbows Be Straight or Bent During Rear Delt Flies?

Maintain a slight, comfortable elbow bend throughout the rear delt fly.

A completely straight arm is not mandatory.

A small elbow bend can make the movement feel more comfortable and reduce the effective resistance lever.

However, excessive elbow bending changes the exercise.

When the elbows bend substantially during the lifting phase, the movement begins to resemble a row.

This increases the involvement of the elbow flexors and changes the shoulder mechanics.

A practical setup uses an elbow bend of approximately 10-30 degrees, although the exact angle is not critical.

Choose an angle you can maintain consistently.

Avoid repeatedly straightening and bending the elbows to move the dumbbells.

If you cannot maintain your chosen elbow position, reduce resistance.

Should You Use a Neutral or Pronated Grip for Rear Delt Flies?

Both neutral and pronated grips can be used for rear delt flies, depending on equipment and shoulder comfort.

A neutral grip places the palms facing inward.

A pronated grip turns the palms more toward the floor in a bent-over position.

Both can train shoulder horizontal abduction.

The grip also influences shoulder rotation and the resulting upper-arm position.

However, changing the grip does not completely isolate different regions of the posterior deltoid.

For most lifters, a comfortable neutral or slightly pronated grip is appropriate.

Avoid forcing extreme internal rotation simply to change the direction of the palms.

If one grip feels uncomfortable, experiment with the other using light resistance.

For cable rear delt flies, individual handles provide additional freedom to adjust hand position.

For machine variations, the available grips depend on equipment design.

Use a grip that allows comfortable shoulder movement and consistent loading.

How to Perform Rear Delt Flies Without Using the Traps Too Much

To emphasize the posterior deltoids during rear delt flies, prioritize upper-arm movement and avoid excessive shrugging or scapular retraction.

The trapezius naturally assists with shoulder blade movement.

Its participation is not a mistake.

However, the exercise can become less focused on the posterior deltoids when the upper back performs most of the movement.

Useful corrections include:

1. Reduce the dumbbell weight.
2. Maintain a comfortable shoulder position.
3. Keep the elbows slightly bent.
4. Move the upper arms outward rather than shrugging upward.
5. Avoid aggressively pinching the shoulder blades together.
6. Keep the torso stable.
7. Lower the weights gradually.

Do not attempt to force your shoulders downward throughout the entire movement.

The scapulae should still move naturally.

The goal is to prevent exaggerated shoulder elevation and retraction from dominating the exercise.

If maintaining this distinction remains difficult, a reverse pec deck machine or chest-supported rear delt fly may make the movement easier to control.

What Tempo and Breathing Technique Should You Use for Rear Delt Flies?

A controlled lifting phase and gradual lowering phase are practical for posterior deltoid hypertrophy.

A useful tempo is:

• Lifting phase: Approximately 1-2 seconds.
• Top position: Optional brief pause.
• Lowering phase: Approximately 2-3 seconds.
• Bottom position: Smooth transition without swinging.

Exhale as you raise the dumbbells.

Inhale as you lower them.

Maintain sufficient abdominal tension to preserve your hip-hinge position.

However, aggressive bracing is usually unnecessary because rear delt flies use relatively modest resistance.

Avoid holding your breath throughout long sets.

The exact repetition speed is less important than maintaining consistent control.

If the dumbbells fall rapidly during the lowering phase, reduce the load.

A short pause near the top can help reinforce movement consistency, but it is not mandatory.

Avoid using exaggerated momentum to complete additional repetitions.

What Are the Most Common Rear Delt Fly Mistakes?

The most common mistakes involve excessive resistance, turning the movement into a row, and using torso momentum.

Using dumbbells that are too heavy: Heavy resistance may force shoulder shrugging, elbow bending, and torso swinging. Reduce the weight until the upper arms move through a controlled range.

Bending the elbows excessively: Large changes in elbow angle turn the exercise toward a rowing movement. Maintain a slight, consistent elbow bend.

Standing too upright: An excessively upright torso changes the relationship between gravity and shoulder movement. Establish an appropriate hip hinge or use chest support.

Shrugging the shoulders: Excessive shoulder elevation can shift emphasis toward the upper trapezius. Focus on moving the elbows outward without deliberate shrugging.

Pinching the shoulder blades aggressively: Maximizing scapular retraction can increase upper-back involvement. Allow natural shoulder blade movement instead.

Swinging the torso: Rising from the hip hinge helps move the dumbbells through momentum. Keep your torso relatively stable.

Raising the weights excessively high: Forcing the dumbbells above a comfortable range may introduce unnecessary compensation. Stop near a controlled shoulder-height endpoint.

Dropping the dumbbells: Rapid lowering reduces control and encourages swinging. Lower gradually.

Using an inconsistent range: Progressively shorter repetitions make performance difficult to compare. Maintain a similar comfortable range across the set.

Forcing uncomfortable shoulder rotation: Extreme grip positions are unnecessary. Use a comfortable neutral or slightly pronated grip.

A small amount of natural body movement is acceptable.

However, substantial changes in torso angle or elbow positioning usually indicate that the load is too heavy for strict rear delt fly technique.

Rear Delt Fly Variations for Beginners and Advanced Lifters

Rear delt flies can be modified through torso support, equipment choice, and repetition technique.

Beginner: Light Standing Bent-Over Rear Delt Fly

Use light dumbbells and practice 2-3 sets of 12-20 controlled repetitions.

Focus on maintaining the hip hinge and moving the upper arms outward.

Beginner: Seated Bent-Over Rear Delt Fly

Sit on a bench and incline your torso forward.

Perform the same shoulder movement with dumbbells.

This reduces some lower-body stabilization demands but still requires torso control.

Beginner: Reverse Pec Deck

Use a machine with chest support and adjustable resistance.

This provides a guided movement that can make it easier to maintain consistent technique.

Intermediate: Chest-Supported Dumbbell Rear Delt Fly

Lie chest-down on an incline bench.

Allow the dumbbells to hang toward the floor and raise the arms outward.

The support reduces torso movement and helps maintain a consistent shoulder path.

Intermediate: Cable Rear Delt Fly

Use cable resistance to perform shoulder horizontal abduction.

Adjust the cable angle so the resistance challenges the intended movement comfortably.

Intermediate: Single-Arm Cable Rear Delt Fly

Train one shoulder at a time.

This provides freedom to adjust the shoulder path and may help identify differences between sides.

Intermediate: Paused Rear Delt Fly

Pause for approximately one second near the top.

This can reinforce consistent positioning and reduce momentum.

Advanced: Slow-Eccentric Rear Delt Fly

Lower the resistance over three or four seconds.

This increases movement-control demands and may require lighter weight.

Advanced: Rear Delt Fly Drop Set

Complete a challenging set, reduce the resistance, and perform additional controlled repetitions.

This can increase local fatigue but is optional rather than necessary.

Advanced: Rest-Pause Rear Delt Fly

Complete a challenging set, rest briefly, and perform additional strict repetitions.

This is usually more convenient on a reverse pec deck machine than with unsupported dumbbells.

Straight sets remain a productive default for most lifters.

What Are the Best Alternatives to Rear Delt Flies?

Several exercises train the posterior deltoids through related shoulder movements.

Reverse Pec Deck: A machine-based shoulder horizontal-abduction exercise that supports the torso. It provides direct posterior deltoid training with reduced balance demands.

Cable Reverse Fly: A cable isolation exercise that trains the posterior deltoids using adjustable resistance direction. It allows flexibility in shoulder and hand positioning.

Chest-Supported Dumbbell Rear Delt Fly: A dumbbell isolation exercise performed on an incline bench. It reduces the need to maintain an unsupported hip hinge.

Single-Arm Cable Rear Delt Fly: A unilateral isolation movement that allows each shoulder to work independently.

Face Pull: A cable exercise involving shoulder horizontal abduction, external rotation, and scapular movement, depending on technique. It trains the posterior shoulders and upper back through a different movement pattern.

Wide-Elbow Chest-Supported Row: A compound pulling exercise that trains the posterior deltoids, trapezius, rhomboids, and elbow flexors. It provides substantial upper-back training but is not an isolation exercise.

Bent-Over Barbell Row: A compound exercise that can involve the posterior deltoids, particularly with a wider elbow path. However, the lats, upper back, and elbow flexors also contribute.

Band Pull-Apart: A resistance-band shoulder horizontal-abduction exercise. It is useful when dumbbells, cables, or machines are unavailable.

Prone Incline Reverse Fly: A chest-supported variation using dumbbells or small weight plates. It provides a stable option for lighter posterior deltoid training.

TRX Reverse Fly: A bodyweight-based movement using suspension handles. It trains shoulder horizontal abduction while requiring substantial trunk stability.

For direct posterior deltoid hypertrophy, reverse pec deck machines, cables, and chest-supported dumbbell variations are particularly practical.

Choose the option that allows comfortable shoulder movement and measurable progression.

Rear Delt Fly vs. Reverse Pec Deck: Which Is Better?

Both rear delt flies and reverse pec deck exercises can effectively build the posterior deltoids.

The main difference is the equipment and stabilization demands.

During a bent-over dumbbell rear delt fly, gravity provides the resistance and the torso must remain stable.

During a reverse pec deck exercise, the machine supports the chest and guides the movement along a fixed path.

The reverse pec deck can make it easier to maintain consistent technique.

The dumbbell variation provides more freedom in hand and upper-arm positioning.

However, a fixed machine path may feel restrictive for some lifters.

Neither variation guarantees greater hypertrophy.

For someone whose lower back becomes fatigued during unsupported rear delt flies, the reverse pec deck may provide more productive posterior shoulder training.

For someone who prefers dumbbells and can maintain a controlled hip hinge, the free-weight version remains effective.

Rear Delt Fly vs. Face Pull: What Is the Difference?

Rear delt flies and face pulls both train the posterior shoulders, but their movement patterns differ.

The rear delt fly primarily involves shoulder horizontal abduction with a relatively stable elbow angle.

Face pulls commonly combine shoulder horizontal abduction, elbow flexion, and external rotation, depending on the technique.

Face pulls also involve substantial scapular movement.

The rear delt fly generally provides a more straightforward shoulder isolation pattern.

Face pulls provide broader upper-back and shoulder training.

For posterior deltoid hypertrophy, either exercise can contribute.

However, if the goal is direct posterior deltoid loading with minimal elbow movement, a rear delt fly may be easier to standardize.

If you want a cable movement involving posterior deltoids and external rotators, face pulls may be appropriate.

Neither exercise is universally superior.

Rear Delt Fly vs. Rear Delt Row: Which Builds More Muscle?

Both rear delt flies and rear delt rows can build posterior deltoid muscle.

The primary difference is elbow movement.

During a rear delt fly, the elbow angle remains relatively stable while the upper arms move outward.

During a rear delt row, the elbows bend substantially as the upper arms travel backward.

This makes the rear delt row a compound pulling exercise.

The rear delt fly is closer to an isolation exercise.

Rear delt rows also train the upper back and elbow flexors.

For direct posterior shoulder training, rear delt flies provide a focused movement.

For training the posterior deltoids alongside the trapezius and rhomboids, rear delt rows are useful.

A balanced back workout can include a compound row followed by direct rear delt fly sets.

However, doing both is not mandatory when existing training already provides sufficient posterior deltoid volume.

Do Rear Delt Flies Work the Traps?

Yes, rear delt flies involve the trapezius, particularly the middle fibers, because the shoulder blades move during the exercise.

However, the posterior deltoids remain the main intended muscle.

The trapezius helps control scapular positioning and movement.

The middle trapezius contributes to retraction, while other portions assist with broader shoulder blade control.

If you deliberately shrug or squeeze the shoulder blades together forcefully, trapezius involvement may become more prominent.

This is not automatically harmful, but it changes the movement emphasis.

For posterior deltoid training, focus on moving the upper arms outward through a controlled range.

Use manageable resistance and avoid exaggerated shoulder elevation.

For direct trapezius hypertrophy, shrugs and appropriate rowing variations may provide more targeted options.

Are Rear Delt Flies Better With Dumbbells or Cables?

Both dumbbell and cable rear delt flies can build posterior deltoid muscle when performed with appropriate resistance and technique.

The main difference is resistance direction.

Dumbbells are loaded by gravity.

Therefore, the external shoulder demand changes as the arms move relative to the vertical line of resistance.

During a conventional bent-over dumbbell rear delt fly, the resistance generally becomes more demanding as the arms approach a horizontal position.

Cable resistance acts along the cable's direction.

By changing pulley height and body orientation, you can modify where the movement feels most challenging.

This may allow greater resistance at positions where dumbbell loading is relatively low.

However, cables are not automatically superior.

Dumbbells are simple, accessible, and easy to use for unilateral or bilateral sets.

Cables provide more options for adjusting the resistance path.

Choose according to equipment availability, shoulder comfort, and progression.

For a program using both, the exercises do not need to appear in the same session.

Can Rear Delt Flies Improve Shoulder Posture?

Rear delt flies strengthen muscles involved in shoulder horizontal abduction and scapular control, but they do not guarantee a particular resting posture.

The posterior deltoids, trapezius, and rhomboids participate in movements that position the upper arms and shoulder blades.

Strengthening these muscles may contribute to overall shoulder function.

However, resting posture depends on several factors beyond the strength of one muscle group.

These include habitual positions, joint anatomy, mobility, and individual movement preferences.

Rear delt flies should therefore be selected primarily for their training benefits rather than as a guaranteed posture correction.

For comprehensive shoulder development, combine appropriate pressing, pulling, and direct deltoid training.

If posture-related discomfort persists, assessment by a qualified professional may be useful.

How Many Sets and Reps of Rear Delt Flies Should You Do?

Rear delt flies are generally well suited to moderate and higher repetition ranges because they are an isolation exercise involving relatively small shoulder muscles.

For muscle growth:

• 2-4 working sets.
• 10-20 repetitions.
• 60-120 seconds of rest.
• Approximately 1-3 repetitions in reserve.

For strength-oriented accessory training:

• 3-4 working sets.
• 8-12 controlled repetitions.
• 90-120 seconds of rest.
• Approximately 1-3 repetitions in reserve.

Rear delt flies are not typically used for maximal single-repetition strength testing.

For muscular endurance:

• 2-3 working sets.
• 15-25 repetitions.
• 45-90 seconds of rest.
• Approximately 1-3 repetitions in reserve.

Repetitions in reserve, or RIR, describes how many additional technically sound repetitions you estimate you could complete before muscular failure.

For hypertrophy, three sets of 12-20 repetitions is a practical starting point.

Choose resistance that challenges the posterior deltoids without forcing excessive elbow bending or torso swinging.

Very heavy dumbbells are usually unnecessary.

If you cannot maintain your chosen shoulder path for at least approximately eight controlled repetitions, the weight may be too heavy for the intended isolation movement.

Rest long enough to maintain productive movement quality.

Very short rest intervals may reduce repetitions without providing a meaningful additional advantage.

Should You Do Rear Delt Flies Before or After Rows?

Rear delt flies generally work well after compound pulling exercises when the main workout goal is back development.

Rows and pulldowns require coordination and substantial resistance.

Fatiguing the posterior deltoids beforehand may reduce performance during some rowing movements.

A practical pull workout order is:

1. Lat pulldown.
2. Chest-supported row.
3. Rear delt fly.
4. Biceps curl.
5. Hammer curl.

However, if posterior deltoid hypertrophy is the main priority, rear delt flies can be performed earlier.

For example, a shoulder-focused session may begin with a shoulder press and then move directly into rear delt flies and lateral raises.

The best exercise order depends on which muscles you want to prioritize.

If the rear deltoids are a weak point, placing direct training earlier may help preserve performance.

Avoid adding unnecessary rear delt sets when your existing rowing volume already provides substantial posterior shoulder work.

How to Progress Rear Delt Flies Over Time

Double progression is a practical method for increasing rear delt fly performance while maintaining consistent shoulder movement.

Example: 3 sets of 12-20 repetitions

Week 1:

• Set 1: 16 repetitions.
• Set 2: 14 repetitions.
• Set 3: 12 repetitions.

Week 2:

• Set 1: 17 repetitions.
• Set 2: 15 repetitions.
• Set 3: 13 repetitions.

Week 3:

• Set 1: 19 repetitions.
• Set 2: 17 repetitions.
• Set 3: 15 repetitions.

Week 4:

• Set 1: 20 repetitions.
• Set 2: 20 repetitions.
• Set 3: 20 repetitions.

Once all three sets reach twenty controlled repetitions with the intended RIR, increase resistance by the smallest practical increment.

Your repetitions may return closer to twelve or fourteen after increasing the weight.

Continue progressing gradually.

Maintain the same:

• Torso angle.
• Elbow bend.
• Grip orientation.
• Shoulder movement path.
• Top position.
• Lowering range.
• Rest intervals.

If the next dumbbell increment is too large, continue improving repetition quality or use a cable machine with smaller weight adjustments.

Avoid increasing resistance by turning the movement into a row.

If a heavier weight requires substantial torso movement, return to the previous load.

Adding another working set may be appropriate when weekly posterior deltoid volume and recovery support it.

However, additional volume is unnecessary when current training is already producing consistent progress.

How Often Should You Train Rear Delt Flies?

Most lifters can include rear delt flies one or two times per week, depending on total posterior deltoid and upper-back volume.

For example:

• First pull session: 3 sets of 12-20 rear delt flies.
• Second upper-body session: 2-3 sets of reverse pec deck or cable rear delt flies.

The posterior deltoids also receive training from rows and some other pulling movements.

Count this overlap when planning weekly volume.

If your program includes several challenging wide-elbow rows, additional rear delt isolation may be less necessary.

If posterior shoulder development is a priority, a modest amount of direct rear delt work can be distributed across multiple sessions.

More frequent rear delt training is not automatically better.

Consistent progression and manageable fatigue remain the primary considerations.

Allow enough recovery between demanding shoulder sessions to maintain movement quality.

Practical Coaching Tips for Better Rear Delt Fly Performance

• Use relatively light resistance: The rear delt fly does not require heavy dumbbells to be challenging.
• Establish a stable torso: Maintain a consistent hip hinge or use chest support.
• Move the upper arms outward: Focus on shoulder horizontal abduction rather than elbow bending.
• Keep a slight elbow bend: Avoid turning the exercise into a row.
• Allow natural scapular movement: Do not rigidly lock or aggressively squeeze the shoulder blades.
• Avoid shrugging: Excessive shoulder elevation may shift the exercise toward greater trapezius involvement.
• Control the lowering phase: Do not allow the dumbbells to fall rapidly.
• Use a consistent top position: Avoid raising the arms excessively high.
• Choose a comfortable grip: Neutral or slightly pronated grips are practical options.
• Consider chest support: This can reduce torso fatigue after heavy back training.
• Track exercise variations separately: Dumbbells, cables, and machines have different resistance profiles.
• Manage total pulling volume: Rows already contribute to posterior deltoid training.
• Increase resistance gradually: Maintain the same elbow angle and movement range when progressing.

Are Rear Delt Flies Safe for Your Shoulders and Lower Back?

Rear delt flies can be comfortable and effective when resistance, range of motion, and body position match your abilities.

Potential sources of discomfort include:

• Excessive dumbbell resistance.
• Forcing the shoulders into an uncomfortable range.
• Extreme internal shoulder rotation.
• Excessive shrugging.
• Aggressive scapular retraction.
• Uncontrolled lowering.
• Repeated torso swinging.
• Maintaining an unsupported hip hinge beyond your comfortable endurance.
• Accumulated shoulder fatigue from excessive training volume.

Normal muscular effort may involve fatigue along the back of the shoulders and upper back.

However, sharp joint pain, numbness, radiating symptoms, or persistent discomfort should not be treated as normal training fatigue.

If the shoulders feel uncomfortable, reduce resistance and adjust grip or movement range.

If the lower back becomes fatigued, use a chest-supported variation or reverse pec deck machine.

If the exercise remains uncomfortable despite reasonable adjustments, another posterior deltoid exercise may be preferable.

Persistent or significant pain warrants assessment by a qualified healthcare professional.

The main objective is controlled shoulder horizontal abduction that challenges the posterior deltoids without unnecessary body compensation.

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