Shoulder Workout: Build Boulder Shoulders
A complete deltoid routine that trains all three heads — front, side and rear — with overhead presses, lateral raises and rear-delt work. Full sets and reps, in a gym version and a home/band version.
- The shoulder is one muscle with three heads — front, side and rear — and great shoulders need all three trained.
- The side delt creates width and the capped look; the rear delt balances posture and is the most neglected.
- Lead with a heavy overhead press for strength, then add raises in higher reps for the side and rear heads.
- Use the gym session or the home / band version — both hit all three delts.
- Always warm the shoulders up first and train through a pain-free range only.
Big, round, capped shoulders make you look strong and athletic from every angle — and they come from one simple principle: train all three heads of the deltoid, not just the front. Most people press and press and wonder why their shoulders never get wider. The fix is to give the side and rear delts the direct attention they need. This page is the complete deltoid routine, with a gym version, a home/band version, and the safety cues that keep your shoulders healthy.
The deltoid is a single muscle with three distinct heads, each with its own job. Hit all three with the right exercises and rep ranges and you build a complete, balanced, powerful-looking shoulder. Skip one — usually the rear — and you get rounded, imbalanced shoulders that ache when you press.
The three deltoid heads you must train
Think of the shoulder as three muscles working together:
- Front (anterior) delt — at the front of the shoulder; drives overhead and forward pressing. It already gets plenty of work from any pressing you do, including chest day, so it rarely needs much isolation.
- Side (lateral) delt — on the outside of the shoulder; this is the head that creates width and the rounded, capped look. It is best trained with lateral raises.
- Rear (posterior) delt — at the back; pulls the arm backward and stabilises the shoulder. It is the most neglected head and the key to posture and a balanced look from the side.
Pressing builds the front delt and overall strength. The side and rear heads — the ones that actually change how your shoulders look — respond best to lighter, controlled raises in higher rep ranges. A complete session does both.
Why side delts give you width — and rear delts fix posture
If broad shoulders are the goal, the side delt is your priority. Because it sits on the outside of the shoulder, building it pushes the deltoid out laterally, creating that wide, capped silhouette and a visually smaller waist by contrast. Pressing alone barely touches it, which is why dedicated lateral raises matter so much. Keep them light and clean — leading with the elbows and controlling the lowering — rather than swinging heavy weights.
The rear delt earns its place for a different reason: balance and posture. Modern life and all that pressing pull the shoulders forward, and weak rear delts make it worse. Training them with rear-delt flyes and face pulls helps draw the shoulders back, supports healthy shoulder mechanics, and completes the rounded look from the side. For a full breakdown of every delt movement, see our best exercises for shoulders library.
The gym shoulder session
This is the full session. Lead with the overhead press while you are fresh and strong, then move to the side and rear isolation work where higher reps and control matter more than heavy loads. Pick weights that leave one or two reps in reserve on the last set.
| Exercise | Sets × reps | Rest / notes |
|---|---|---|
| Overhead press (barbell or dumbbell) | 4 × 6–10 | 2–3 min · the strength foundation |
| Arnold press | 3 × 8–12 | 90 s · rotate palms, hits front & side |
| Lateral raise | 3 × 12–20 | 60 s · light, lead with elbows, no swing |
| Rear-delt fly | 3 × 15–20 | 60 s · bent over, pinkies up |
| Face pull (cable / band) | 3 × 15–20 | 45 s · pull to forehead, posture & rear delt |
| Cable Y-raise (upright row alternative) | 2 × 15 | 45 s · shoulder-friendly side-delt finisher |
Note the cable Y-raise in place of the traditional upright row. Upright rows can pinch the shoulder for many people, so a Y-raise or high cable raise gives the same side-delt stimulus far more safely. Lead with the overhead press done with strict form — it is the single best shoulder-strength builder and the foundation of the whole session. This routine slots neatly into a wider upper-body plan or a push day.
If you have to heave the dumbbells up on lateral and rear raises, they are too heavy and momentum is doing the work. Go lighter, lead with the elbows, and lower under control for two seconds. The side and rear delts grow from clean tension, not ego loading.
Home / band shoulder session
You can build excellent shoulders at home with a resistance band and bodyweight. The pike push-up is the star — by getting your hips high and pressing your head toward the floor, you load the front and side delts much like an overhead press. A band then covers the lateral and rear-delt work that bodyweight cannot. Run this 2–3 times a week.
| Exercise | Sets × reps | Rest / notes |
|---|---|---|
| Pike push-up | 4 × 8–12 | 90 s · hips high, head toward floor |
| Band overhead press | 3 × 10–15 | 75 s · stand on the band, press up |
| Band lateral raise | 3 × 15–20 | 60 s · constant tension, lead with elbows |
| Band rear-delt fly / pull-apart | 3 × 15–20 | 60 s · arms straight, squeeze shoulder blades |
| Band face pull | 3 × 15–20 | 45 s · anchor at head height, pull to face |
| Band Y-raise | 2 × 15 | 45 s · side-delt finisher |
As pike push-ups get easy, raise the difficulty by elevating your feet on a chair to shift more load onto the shoulders. For a full band routine you can build around this, see our resistance band workout; if you have dumbbells, the dumbbell-only workout gives you even easier progression on raises and presses.
Warm-up, safety & rep ranges
The shoulder is the most mobile — and therefore the most vulnerable — joint in the body, so never skip the warm-up. Before pressing, spend a few minutes on band pull-aparts, arm circles and a couple of light press sets to raise the joint temperature and switch on the rotator cuff. Our full warm-up routine covers a complete sequence.
On rep ranges, use a mix matched to each head: keep the overhead press at 6–10 reps for strength and size, and train the side and rear delts at 12–20 reps, since those small muscles respond best to controlled, higher-rep work. Keep the bar or dumbbells tracking over your mid-foot, avoid excessive elbow flare, and stop any set the moment form breaks down. Sharp joint pain is always a signal to stop and regress — train through a pain-free range only, and see a professional if discomfort persists.
Training frequency & how to progress
The side and rear delts are small and recover quickly, so they tolerate two to three sessions a week. Heavy overhead pressing needs more recovery, so space your heavy press days by at least 48 hours. You can also sprinkle a few sets of lateral and rear raises into other training days, since that high-rep work barely dents recovery.
Progress with progressive overload: add a rep or a little load on the press over time, and on raises add reps, slow the tempo, or move to a heavier band before chasing weight. Combine that steady progression with enough protein and sleep — the same fundamentals behind any muscle growth, covered in our how to build muscle guide — and your shoulders will round out month by month.
Sources & further reading
- American Council on Exercise (ACE) — deltoid exercise technique library.
- National Strength and Conditioning Association (NSCA) — overhead pressing and shoulder exercise selection.
- American College of Sports Medicine (ACSM) — resistance-training and injury-prevention guidelines.
- U.S. Centers for Disease Control and Prevention — muscle-strengthening guidelines for adults.
External links are provided for reference and do not imply endorsement. arsenal.fit is an independent publisher and is not affiliated with any cited organisation.