How often should I train rear delt flies?

Most lifters do well with a hard reverse-fly pattern about 2–3 times per week when shoulders recover. Spread quality isolation after presses and rows instead of one endless trap-and-rear-delt dump day.

Are face pulls the same as rear delt flies?

No — face pulls help balance and scapular control, but they are a different pull-to-face path. Keep one open-arm reverse fly as the logged isolation score and treat face pulls as a cousin tool.

Why do my rear delt flies feel like rows?

Heavy load and bent elbows turn the set into a yank. Soften the elbows, reduce load, pause at the peak, and progress clean open-arm reps first. Stop sharp shoulder or neck pain — this page is programming context, not rehab.

How to Increase Your Rear Delt Fly

The Dumbbell Rear Delt Fly (and close cousins like a Dumbbell Reverse Fly, Dumbbell One Arm Reverse Fly, Cable Seated Rear Delt Fly with Chest Support, Cable Standing Cross-over High Reverse Fly, Lever Seated Reverse Fly, or Band reverse fly) is a clear horizontal-abduction rear-delt isolation score: soft elbows you can repeat, open the arms out to the sides (or against a reverse-fly pad), finish with quiet neck and a brief peak squeeze, then lower without turning the set into a bent-over row yank or a face-height pull. It fits upper/lower, push/pull/legs, and shoulder or pull days when you want direct posterior-delt volume after presses and rows. Increasing it is mostly about enough honest reverse-fly practice, tiny load jumps, and keeping the same tool and elbow angle in the log — not stacking six rear-delt gadgets after every hard press day.

This page is general fitness guidance for healthy adults — not medical advice, physical therapy, or personalized coaching. Library pages carry exercise-specific setup cues; open them when you need technique detail. For the face-height pull-to-face / rear-delt-row pattern, see How to Increase Your Face Pull. For side-delt isolation, see How to Increase Your Lateral Raise. For the main vertical press that often needs rear-delt balance, see How to Increase Your Overhead Press. For horizontal pulling volume, see How to Increase Your Rows. For trap elevation support, see How to Increase Your Shrug.

What usually moves the number

Lever	What to do	Why it helps
Frequency	Practice a hard rear-delt fly about 2–3× per week when recovery allows	Posterior delts respond well to frequent, moderate isolation sets
Progressive overload	Add clean reps, a brief peak pause, tempo lowers, or the smallest dumbbell/stack jump when RPE drops	The actual driver of long-term capacity (progressive overload)
Pattern-specific practice	Keep one bent-over, chest-supported, cable, or machine reverse fly as the primary score	Strength is specific — face pulls help balance, but they are not the same open-arm log
Weak-range work	Pause at the peak, tempo lowers, chest-supported or seated tools	Build the finish without random “rear-delt hacks”
Supporting muscle	Mid-back rows, a solid press week, and optional light face-pull work	Scapular control and a stable torso support cleaner flies
Recovery	Sleep, rest days, and deloads when grinders stall	Missed reps from fatigue are not a programming puzzle (rest days, deload)

If you are brand new, a light Dumbbell Rear Delt Fly, Band reverse fly, or Lever Seated Reverse Fly often works for weeks before meaningful load jumps. If you have already stalled, keep the same main reverse-fly style (bent-over vs chest-supported vs cable vs machine), add a second lighter rear-delt day, and stop changing programs every two weeks (how often to change your workout). Treat the rear-delt fly as a controlled open-arm isolation score, not an ego bent-over row — many lifters keep loads well below their seated row and progress reps before plates.

Setup priorities (high level)

Use the Dumbbell Rear Delt Fly or Lever Seated Reverse Fly library entry for full cues. As a conservative checklist:

Warm up with empty hands, light bands, or easy ramping sets after your main press or row warm-up (warm-up, warm-up sets vs working sets).
Keep a soft, fixed elbow angle you can repeat week to week — not locked-out elbows and not a full bent-over row path (how to breathe during lifts).
Hinge or brace so the torso stays quiet (bent-over, incline chest-supported, seated cable, or machine pad). Open the arms out to the sides until the rear delts feel loaded — stop before the traps shrug hard or the elbows turn the set into a high pull.
Prefer joint-friendlier tools when needed: Cable Seated Rear Delt Fly with Chest Support, Lever Seated Reverse Fly, Band reverse fly, or Bodyweight Bent Over Rear Delt Fly. Prefer one-arm or incline cousins? Keep Dumbbell One Arm Reverse Fly / Dumbbell Incline Alternate Reverse Fly as tools, not a weekly identity crisis for the log.
Finish with a brief peak squeeze and quiet neck — do not turn every rep into a torso swing, a shrug race, or a face-pull external-rotation finish if that is not the pattern you logged.

Sharp shoulder, neck, or upper-back pain is a stop signal — reduce range, switch to Lever Seated Reverse Fly, Cable Seated Rear Delt Fly with Chest Support, Band reverse fly, or deload. This guide is not injury treatment. Treat ultra-heavy bent-over reverse flies with a bouncing swing, extreme incline gadgets, and max-effort reverse-fly singles as optional / advanced tools — not the default beginner score. Do not chase swinging torso momentum, upright-row elbow paths, or “more stretch at any cost” as the strength score.

How to program rear-delt-fly progress

Pick a main rear-delt fly — usually Dumbbell Rear Delt Fly / Dumbbell Reverse Fly. Prefer a machine path? Keep Lever Seated Reverse Fly. Prefer cables? Keep Cable Seated Rear Delt Fly with Chest Support / Cable Standing Cross-over High Reverse Fly / Cable One Arm Reverse Fly. No free weights yet? Use Band reverse fly / Resistance Band Bent Over Rear Delt Fly / Bodyweight Bent Over Rear Delt Fly, then graduate. Prefer one-arm or incline cousins for comfort? Keep Dumbbell One Arm Reverse Fly / Dumbbell Seated Bent Over Alternate Rear Delt Fly / Dumbbell Incline Alternate Reverse Fly as tools, not a weekly swap of the logged score.
Train it ~2–3× per week when recovery allows: one slightly harder day and one lighter or volume day (muscle frequency). Stacking hard reverse flies after every heavy overhead press, dense lateral raise, high-volume row, and max face pull session can leave the rear delts fried — put the fly as the isolation finisher after a moderate press or pull, not as six grinders before everything else.
Use set–rep bands that match the goal (sets and reps, strength vs hypertrophy):
- denser isolation / load-bias: ~3–4 sets of 10–15 @ about RPE 7–8
- muscle / rear-delt volume bias: ~3–4 sets of 12–20 on the main reverse fly, after a quality press or row
Progress with more clean reps in the band first, then the smallest dumbbell, cable, or stack jumps you own when quality stays high — microplates and tempo beat ego jumps (weight too heavy). Confirm bar loading on any press day with How to Load a Barbell and the Plate Loading Calculator.
Rest ~60–120 seconds on hard reverse-fly sets so the next set is still a quality open-arm finish (rest between sets). Use the RPE calculator if you program by effort.
Estimate working loads from a clean submaximal set with the 1RM calculator (Epley / Brzycki) only when you want a rough training number for the same reverse-fly pattern — treat it as a light heuristic for dumbbell/cable/machine load jumps, not a meet total (how to calculate 1RM). Prefer logged sets of 10–20; true max singles are optional and rare for general gym work on this lift. Do not copy a row or face-pull 1RM percentage blindly — the pattern is an open-arm isolation score, not a face-height pull or bent-over row score.
Log date, variation (dumbbell / one-arm / incline / cable / machine / band / bodyweight), elbow notes, load × sets × reps, pause notes, and RPE (workout log).

Keep hard isolation movements in a sensible session budget — usually a main press or row plus 1–2 rear-delt accessories, not six reverse-fly gadgets after an already long push or pull day (exercises per workout, workout length). Remember presses, lateral raises, and dense rows already tax the shoulders and upper back (best shoulder exercises, best back exercises).

Useful variations and accessories

Main lift and close cousins

Dumbbell Rear Delt Fly / Dumbbell Reverse Fly — primary dumbbell scores
Dumbbell One Arm Reverse Fly / Dumbbell One Arm Reverse Fly — unilateral cousins; log separately if the range changes
Dumbbell Seated Bent Over Alternate Rear Delt Fly / Dumbbell Bent Over Alternate Rear Delt Fly / Dumbbell Incline Alternate Reverse Fly — seated / alternate / incline tools
Dumbbell Rear Delt Raise / Barbell Rear Delt Raise — raise-path cousins; keep the same open-arm intent in the log
Cable Seated Rear Delt Fly with Chest Support / Cable Standing Cross-over High Reverse Fly / Cable One Arm Reverse Fly — constant-tension cable scores
Lever Seated Reverse Fly / Lever Seated Reverse Fly — machine paths when free weights feel unstable
Band reverse fly / Resistance Band Bent Over Rear Delt Fly / Bodyweight Bent Over Rear Delt Fly / Suspension Reverse Fly — band / bodyweight / suspension entry tools

Sticking-point and skill tools

Pause at the peak — 1–2 seconds, often with a ~10–20% load drop (pause reps)
Tempo lowers (~3 seconds) on lighter days (tempo training)
Slow negatives on lighter dumbbells, cables, or machines when you want more eccentric control (negative reps)
Shorter range first: stop before the traps shrug or the torso swings; deepen only when the finish stays quiet

Pressing, pulling, and isolation support

Keep a main overhead press in the week when it fits your goal (how to increase your overhead press)
Keep a main row when it fits your split (how to increase your rows; how to increase your seated cable row)
Optional side-delt cousin: How to Increase Your Lateral Raise
Optional front-delt cousin (usually already covered by presses): How to Increase Your Front Raise
Optional face-height pull-to-face balance later in the week (how to increase your face pull) — do not log a face pull and a reverse fly as the same score; they are related rear-delt tools with different elbow paths
Optional light trap support when posture needs it (how to increase your shrug) — do not turn every reverse fly into a shrug

Starter templates by goal

Not yet ready for heavy reverse-fly jumps (2 practice days)

Day A — skill + moderate rear-delt fly

Easy press or row warm-up — 2–3 easy sets
Main Standing Military Press or Dumbbell Seated Shoulder Press — 3–4 × 6–10 @ ~RPE 6–7 (overhead press plan)
Dumbbell Rear Delt Fly or Band reverse fly — 3 × 12–15 @ ~RPE 6–7
Optional light Band Face Pull — 1–2 × 12–15 (face-pull plan)

Day B — volume / easier pattern

Lighter row — 3 × 8–12 @ ~RPE 6 (rows plan)
Pause cable or machine reverse fly — 2–3 × 12–15
Optional light lateral raise — 2 × 12–15 (lateral raise plan)

Strength / denser push–pull week (rear-delt fly as isolation after the main lift)

Day A — harder press + reverse fly

Main Standing Military Press or Barbell Standing Military Press — 3–5 × 3–8 @ ~RPE 7–8
Dumbbell Rear Delt Fly — 3–4 × 10–15 @ ~RPE 7–8
Optional light cable or machine reverse fly — 2 × 12–15
Optional: light face-pull work later in the week

Day B — lighter / volume

Row work — 3 × 6–10 @ ~RPE 6–7
Cable, machine, or lighter dumbbell reverse fly — 3 × 12–20 @ ~RPE 6–7 (pause optional)
Optional lateral raise or face pull — 2–3 × 12–15 (how to increase your lateral raise; how to increase your face pull)

Hypertrophy / muscle-gain shoulder day

Main overhead press — 3–4 × 5–10
Lateral raise — 3–4 × 10–15
Main rear-delt fly cousin — 3–4 × 12–20
Optional light face pull — 2 × 12–15
Keep a hard row elsewhere in the week so the upper back stays balanced

Busy / minimalist add-on

Keep one quality reverse-fly session (3–4 hard sets) as the isolation finisher after a moderate press or row. Skip extra incline/one-arm gadgets if time is tight. Skip when heavy overhead press + dense face-pull / lateral-raise work already fried the shoulders for the week.

Intensity tools (pause, tempo, clusters, pyramids) work best on top of this structure — not instead of logging small weekly wins (clusters, pyramid sets).

When to use extras (and when to skip)

Good uses:

You can hit all prescribed reps for 1–2 sessions and need a planned jump (smallest dumbbell/cable/stack increment, or +1–2 clean reps)
You lose the peak squeeze or quiet-neck finish → paused reps, tempo lowers, or a temporary lighter day
You swing the torso, shrug hard, or turn an open-arm fly into a bent-over row / upright-row yank → drop load, shorten range, or use chest-supported / machine tools
Beginners adding clean tempo reps every week or two on bands or light machines before chasing heavier dumbbell reverse flies

Usually skip or keep simple:

Program-hopping every stall instead of deloading and rebuilding (plateau guide)
Daily max singles and failure sets on heavy reverse flies (train to failure)
Stacking drop sets, rest-pause, heavy pauses, and giant sets on reverse flies in the same week (drop sets, rest-pause)
Ignoring pressing skill, row work, face-pull balance, and recovery while only chasing a deeper swing
Sharp joint or tendon pain “pushed through” with tighter form cues alone
Turning every set into a torso swing or a shrug race
Treating the reverse fly like a row PR with bent elbows and ego load
Logging a face pull and a reverse fly as the same weekly score
Chasing ego loads that remove the soft-elbow open-arm path

Worked example: dumbbell rear-delt-fly progression

Exercise: Dumbbell Rear Delt Fly. Plan: harder day 3 × 15 @ ~RPE 7–8 after a moderate press, then a lighter cable or machine day later in the week when recovery allows. Keep the same elbow angle and tool family in the log.

Estimate a rough training number from a clean set of 10–15 with the One-Rep Max Calculator (name the formula you used — Epley or Brzycki) only if it helps you pick the next small dumbbell jump, or simply add reps first. Prefer the same tool each time you compare.
Prefer conservative jumps versus a row or face-pull estimate — the patterns are related by rear-delt work, not identical. Many lifters progress better by adding 1–2 clean reps before the next small load jump.
Warm up: empty hands or light bands + 1 easy feeler set (warm-up sets).
Working sets: open the arms under control, optional 1-second peak pause, lower with quiet neck. Rest ~60–120 seconds.
If all 3×15 were clean at RPE ≤ 7.5, add +1–2 reps next hard day, or the smallest dumbbell jump that keeps elbows soft and the torso quiet. If you missed reps, swung, or shrugged hard, repeat the load or drop ~5–10% (weight too heavy).
Later in the week: 3 × 12–20 at a lower RPE, or use Cable Seated Rear Delt Fly with Chest Support / Lever Seated Reverse Fly / Band reverse fly / pause work without changing the log’s main style every session.

Log DB rear delt fly 8 kg × 3 × 15 @ RPE 7.5 (or Cable reverse fly 15 kg × 3 × 15 @ RPE 7 / Lever reverse fly 25 kg × 3 × 15 @ RPE 7). Re-estimate any formula number every few weeks from a clean non-grinder set, not from a max single every session.

If you are still on bands or very light machines: treat “more clean tempo reps → brief pause → real light dumbbells/stack” as the progression before chasing heavy reverse-fly PRs.

Common mistakes

Changing dumbbell vs cable vs machine vs band every week so the log never compares like-to-like
Changing elbow angle every session (soft reverse-fly one day, bent-over row the next) and calling both the same score
Taking every set to failure, then wondering why the next overhead-press day feels sticky in the shoulders
Adding five reverse-fly variations while main fly sets stay easy and inconsistent
Skipping pressing skill, row work, face-pull balance, and recovery until the neck and traps become the limiter
Swinging the torso and counting it as the same strict score
Testing a true max every session instead of training submaximal sets and estimating occasionally
Counting half-range, shrugged, or swung reps as full progress
Jumping load so fast that the set becomes a bent-over row or upright-row yank
Putting six hard reverse-fly sets before the main press when that press already needs fresh shoulder readiness
Logging face pulls as “rear delt fly” progress (related tools, different scores)
Chasing “more stretch at any cost” with locked elbows and ego load

Limitations

Rear-delt fly capacity depends on leverages, shoulder comfort, tool choice, and skill — templates are heuristics, not guarantees
Dumbbell, cable, machine, band, bodyweight, and face-pull cousins are related but not the same score
Formula 1RMs (Epley / Brzycki) err on high-rep sets and on grinders with broken technique; treat them as training tools only
A reverse-fly training number is not interchangeable with a face-pull, lateral-raise, row, or overhead-press max
This is not treatment for shoulder impingement, neck irritation, or upper-back pain

How to Increase Your Rear Delt Fly

Frequently asked questions

What usually moves the number

Setup priorities (high level)

How to program rear-delt-fly progress

Useful variations and accessories

Starter templates by goal

When to use extras (and when to skip)

Worked example: dumbbell rear-delt-fly progression

Common mistakes

Limitations

Quick links

How to Increase Your Rear Delt Fly

Frequently asked questions

What usually moves the number

Setup priorities (high level)

How to program rear-delt-fly progress

Useful variations and accessories

Starter templates by goal

When to use extras (and when to skip)

Worked example: dumbbell rear-delt-fly progression

Common mistakes

Limitations

Quick links

Related guides and tools