If your shoulders round forward at your desk, or you've hit a plateau on your bench press and overhead work, the culprit is often hiding in plain sight: an underdeveloped rear deltoid. Most training programmes are front-loaded with pressing — bench presses, push-ups, shoulder presses — while the back of the shoulder gets a fraction of the attention. Over time, this creates an imbalance that pulls the shoulders forward, limits mobility, and raises your risk of niggling injuries. The fix isn't complicated. Add a handful of targeted rear delt exercises to your weekly routine, and you'll notice sturdier, more capable shoulders within weeks. Here's what to do and why it works.
Why the Rear Deltoid Deserves More Attention
The posterior deltoid, along with supporting muscles like the rhomboids and rotator cuff, handles three jobs that are easy to overlook:
- Pulling movements — rows, pull-ups, face pulls all rely on it.
- Shoulder stability — it counteracts the forward pull created by pressing muscles, keeping your shoulder blades in a healthy position.
- External rotation — essential for safe, controlled overhead movement and most rotational sports.
Neglect it, and the consequences show up gradually rather than all at once: a hunched, forward posture; a shoulder joint that feels less "locked in" during heavy lifts; and, in some cases, impingement-type pain that flares up during pressing work. None of this is inevitable — it's simply a matter of giving the back of the shoulder equal billing in your programme, once or twice a week.
The 6 Best Rear Delt Exercises
1. Single-Arm Bent-Over Dumbbell Row
Targets: rear delts, lats, traps, biceps, core
Kneel your left knee and hand on a flat bench, right foot planted on the floor, dumbbell hanging in your right hand with a flat back and braced core. Row the weight up towards your hip, squeezing the shoulder blade at the top, then lower under control. Do 3–4 sets of 10–12 reps per side.
Coaching cue: keep your torso square to the floor — if you're twisting to move the weight, it's too heavy. Keep shoulders down and away from your ears throughout. This one doubles nicely as a finisher on back day.
2. Bent-Over Reverse Fly
Targets: rear delts, mid delts, rhomboids
Hinge forward around 45 degrees with soft knees, holding light dumbbells with palms facing each other. Raise your arms out to the sides into a "T" shape, elbows slightly bent, squeezing the rear delts at the top before lowering with control. Aim for 3 sets of 12–15 reps.
Coaching cue: resist the urge to use momentum — swing the weights and you're just cheating the movement. Stop the arms once they're roughly parallel to the floor; going higher shifts the load away from the rear delts. Struggling with balance? Try the seated version on an incline bench.
3. Cable Face Pull
Targets: rear delts, traps, rotator cuff
Set a cable pulley to upper-chest height with a rope attachment. Step back to create tension, arms extended forward, then pull the rope towards your forehead while keeping your elbows high — think "goalkeeper" position. Squeeze, then return slowly. 3 sets of 12–15 reps.
Coaching cue: keep the elbows up throughout rather than letting them drop, and stay upright instead of leaning back to generate momentum. Use a moderate load — this exercise is about technique and muscle engagement, not how much weight you can shift.
4. Reverse Pec Deck Fly
Targets: isolated rear delts, mid-traps
Sit facing the pad with handles set at shoulder height, gripping with a neutral or overhand hold. Pull your arms back and out, elbows softly bent, hold the contraction for a second or two, and return slowly. 3 sets of 10–12 reps.
Coaching cue: keep your chest pinned to the pad rather than arching your back to move more weight. This one's ideal for finishing off a session with a clean, isolated pump.
5. Assisted Pull-Up
Targets: rear delts, lats, biceps, traps
Set the assistance level on the machine to something challenging but achievable, take an overhand grip (go slightly wider to bias the rear delts more), and pull yourself up until your chin clears the bar. Lower slowly, keeping tension through the rear shoulder the whole way down. 3–4 sets of 6–10 reps.
Coaching cue: initiate every rep by drawing the shoulder blades down first, and keep the legs still rather than kicking for momentum. Once you can manage five or more strict, unassisted pull-ups, drop the machine altogether.
6. Side-Lying External Rotation
Targets: rear delts, rotator cuff (infraspinatus, teres minor)
Lie on your side, elbow bent to 90 degrees and tucked against your body, a rolled towel underneath the upper arm for support, holding a light dumbbell (around 1–2 kg). Rotate your forearm upward — like opening a door — pause briefly, then lower slowly. 3 sets of 12–15 reps per side.
Coaching cue: only the forearm should move; the shoulder joint stays still. This is a rehab-style exercise, so keep the weight genuinely light — it's about control, not load. Two to three sessions a week can help ease shoulder discomfort and improve mobility over time.
Building Rear Delts Into Your Weekly Plan
You don't need a dedicated session for this — one or two focused blocks per week, tucked into your shoulder or back day, is enough to see real change. A sensible split:
| Goal | Sets & Reps | Load |
|---|---|---|
| Strength | 3–4 × 8–12 | Moderate |
| Endurance / rehab | 3 × 12–15 | Light |
Pair a compound pull (rows or pull-ups) with one or two isolation moves (reverse flys, face pulls) for a well-rounded session. Give it four to six weeks of consistent work, and you should notice a straighter, less hunched posture, sturdier shoulders on your pressing lifts, and fewer nagging aches during bench press, overhead press or pull-up sessions.
Consistency beats intensity here — a couple of focused sets each week will do more for your shoulders long-term than one brutal session every few months. If you want to make consistent shoulder training easier at home, the Speediance Gym Monster provides a versatile cable-based setup for rows, reverse flys, face pulls and other upper-body exercises.
