Why Aren't My Shoulders Growing? What Might Be Holding Back Your Delts
If you're training your shoulders regularly but can't see much change, I wouldn't start by asking you to do another exercise. I'd ask you to show me what you're doing now. You might already be working hard; the useful question is where that work is going, and whether the programme gives the parts you want to develop enough attention.
It's frustrating to put time into something and feel you have little to show for it. Let's work through the things I'd check with you in a session, from how you raise a dumbbell to how the week is organised. Then we'll look at two example upper-body sessions so you can see where shoulder training fits.
What are we actually trying to grow?
When you say you want bigger shoulders, do you mean more width, more roundness, or a better balance between the front and back? That helps me decide where to look. The deltoid has front, middle and rear regions, often called anterior, lateral and posterior. A programme can give one plenty of work while leaving another with very little.
Pressing involves the front delts. Raising your upper arm out to the side gives us a useful way to train the middle region, while moving it backwards and outwards involves the rear. They don't work in complete isolation, but the different arm paths help explain why I might put a lateral raise and a reverse fly alongside your press.
Your shoulder blades move as your arms rise, with help from the upper back and the muscles around your ribs. The rotator cuff contributes to control at the joint. This anatomy guide explains the detail. In practice, you don't need to keep every other muscle quiet for your delts to work; I look at how the movement comes together.
We'll also judge change against your own starting point. Your build, muscle attachments and body-fat distribution influence the shape you see. Someone else's photograph can give you an idea of a look you like, but it can't tell us exactly what your shoulders will look like after training.
You may be doing plenty of pressing, but very little for the side delts
Take bench press, incline press and overhead press. Your diary might list them on different days, but the front delts are involved in all three. Add front raises and that area gets more attention again. Those exercises may all be useful, but before adding anything I'd check whether the side and rear delts are getting a comparable opportunity to develop.
If width is your priority, lateral raises deserve a proper place in the week. Think about when you actually do them. Are they squeezed into the last five minutes, using whichever dumbbells are free? It's understandable when you're busy, but that arrangement makes it difficult to give them much attention or know whether they're improving.
I might move the raises earlier, split them across two days, or remove an exercise that repeats work you're already getting. We don't necessarily need longer sessions. We need enough time to do the chosen exercises well and record what happened. A plan that fits your ordinary week gives us much more to work with than one that only fits a quiet week.
This is the approach I describe in strength training for women in Chiswick: choose the work for the person and the goal. Here, that means looking at the whole week before deciding that your shoulders simply need more of everything.
How hard are those sets actually becoming?
When I watch a set, I want to know what made you stop. Was fifteen the number written down, or was another repetition becoming difficult? The same fifteen reps can describe very different amounts of effort. If you finish every set with plenty left, we may need a greater challenge before adding more exercises.
Repetitions in reserve, or RIR, is a way of describing that effort. Two RIR means you think you could manage about two more similar repetitions. You won't estimate it perfectly at first. As you repeat an exercise, you get more familiar with the point where it's hard but you can still do what you're trying to do.
For many working sets on familiar exercises, leaving roughly one to three similar reps available is a useful starting point. I pay attention to 'similar': if another raise needs a big bounce and a backward lean, the exercise has changed. That's where I'd stop you, explain what happened and decide whether we finish the set or adjust the weight.
You can work hard without taking every set to failure. A 2024 analysis linked training closer to failure with greater muscle growth, but a systematic review didn't establish that momentary muscular failure produces better growth than stopping short. That fits a practical approach: make the sets demanding, then leave enough to repeat useful work.
With dumbbells overhead, I also want you to finish and bring them down confidently. If you need a substantial change of position to force another rep, you don't have to prove anything by attempting it. We'll use what happened to choose the next set.
A heavier dumbbell doesn't always mean the shoulder is doing more
Imagine your lateral raises with 5 kg: your arms move steadily and you can control the return. You try 7 kg and now need a push from your legs, with much less arm movement. The weight has gone up, but we've changed the exercise too. Before calling that progress for your shoulders, I'd have you compare the two sets.
There's a place for momentum in some training. For this set, we're trying to give the shoulders work we can repeat and build on. I'll ask you to use a weight that lets you lift the arms without a large whole-body effort. That gives you a clear job to practise, rather than a vague instruction to use 'better form'.
Going lighter can feel like going backwards, especially after working hard to move up. So I'd give you a progression straight away: keep this weight, build the repetitions, then try a smaller increase when it's available. You're still working towards something. We're choosing a step that lets you continue training the movement we intended.
A short video can help when you train alone, where filming is permitted and doesn't include other people. Compare the beginning and end of the set for obvious changes in arm range or torso movement. You don't need to inspect every centimetre; look for the change we've agreed matters for this exercise.
The raised position of a lateral raise; elbow bend changes the lever, so keep yours consistent when comparing sets. Photo: ThoroughlyReviewed / Wikimedia Commons, CC BY 2.0. Display size adjusted; no other edits.
Going from 4 kg to 6 kg is a fifty per cent increase in each hand. The numbers look small beside a shoulder press, but that's a big step for a lateral raise. If the next pair feels unmanageable, don't assume you've hit a permanent limit. We may just need more room between the two loads.
A repetition range gives us that room. With twelve to fifteen reps, build towards fifteen across all the planned sets at a similar effort and with a similar arm path. Then try the smallest suitable weight increase. If it makes the target unmanageable, return to the previous load or use a smaller increment. Another controlled repetition is progress worth recording.
Write down the exercise, weight, reps and roughly how many more you had. Note a change in seat height or set-up too. Next time you'll have something useful to compare, instead of trying to remember how tired you felt. I use those records to decide when to repeat a load and when to move on.
Do you need more shoulder work, or a better balance across the week?
Someone who rarely gets to lateral raises needs a different plan from someone already training shoulders hard several times a week. Adding the same extra sets to both makes little sense. First, look at what you can perform consistently. Then we can decide whether more work is likely to help or whether the existing work needs organising.
Include chest pressing and rows in that conversation: they contribute to front- and rear-delt work. They aren't identical to direct shoulder exercises, but they still count towards what you're managing. Warm-up sets have a different job and shouldn't all be added to your total as demanding shoulder work.
The 2026 review of volume and frequency associated more weekly work with more growth, with diminishing returns, and distinguished direct from indirect sets. It doesn't give every client a perfect number. I'd use a reasonable starting amount, then look at your performance and recovery before adding to it.
One difficult workout wouldn't make me abandon the plan. Falling reps across several sessions, persistent fatigue or struggling to repeat the same workload would make me look more closely. Tell me about busy weeks, sleep and sport. Those details help us judge whether to reduce something, hold steady or progress.
Lateral raises and why a small weight can feel so heavy
For a lateral raise, start with a small bend in the elbows and lift the upper arms outwards. A little forwards may feel more natural than directly sideways. Somewhere approaching shoulder height is a useful starting range for many people. Keep your hands comfortable; you don't have to turn the little fingers upwards as though pouring a jug.
Notice how much harder the dumbbells feel as they move away from your sides. The horizontal distance from the shoulder changes the demand, which is why a small weight can feel substantial near the top. Once you understand that, it's easier to accept a suitable load instead of comparing it with what you can press.
Bending your elbows more brings the weights closer to the shoulders and changes the lever. That's a reasonable variation, but I'd keep the bend fairly consistent within the set. If it keeps increasing as you tire, I'd point that out and help you decide whether you've reached the end of the version we're practising.
Let the shoulder blades move with the arms. You don't need to pin them down and back throughout the raise. Feeling some upper-back effort is normal. If a large shrug starts replacing much of the arm movement, that's something we can change; ordinary movement around the shoulder blade doesn't need correcting just because you notice it.
Would a cable or machine make it easier to concentrate on the shoulders?
If balancing takes your attention away from the raise, use light hand support, sit down or try a suitable machine. That can make it easier to concentrate on the shoulders. Support can stay in the programme if it helps us load the movement effectively; removing it isn't automatically the next progression.
Set the equipment up for you. Pulley position changes the direction of resistance, while machine seats and pads affect the path you follow. Use a manageable weight to try the settings, following the equipment's guidance. If the movement feels awkward, tell me where. A small adjustment may help more than another cue about squeezing harder.
You don't have to find a cable to get useful shoulder work. An eight-week study found similar side-delt growth with cable and dumbbell raises in trained participants. It was small, but it supports choosing a version you can use comfortably and regularly. A complicated set-up that's rarely available may make training harder to maintain.
Finding a shoulder press that suits you
A standing barbell strict press gives us a clear main lift to practise and load gradually. I'd use it when you can manage the bar, rack position and overhead movement comfortably. Dumbbells let the hands find a different path; a supported seat or machine can help when standing takes too much attention. The choice should help you train, rather than become another obstacle.
Set the rack so you can take the bar at upper-chest height without reaching up for it. Begin with an empty or lighter training bar you can control. Support it through the hands and forearms, keep the legs still and press past the face to a comfortable overhead finish. If you increasingly lean backwards or need a knee drive, I'd reduce the load. We're practising a strict press here.
Let the shoulder blades move as your arms rise. If we're using dumbbells, palms partly facing each other may feel more comfortable than fully forwards. We can try that without treating one dumbbell grip as compulsory. My guide to wrist position in bench and overhead pressing explains how the hands, forearms and load relate.
A dumbbell overhead press. Start with a position you can manage confidently and a range that feels comfortable. Photo: Ivan S / Pexels, Pexels licence.
Stop a variation that brings on unexplained pain. We can review the set-up and consider a comfortable alternative, such as an inclined or landmine press, recognising that it changes the exercise. Useful side- and rear-delt work may still fit. Persistent or worsening symptoms need assessment rather than repeated attempts to push through the same problem.
Rear-delt work and where rows fit in
Back training can contribute to rear-delt work, but I'd look at the exercises before assuming it covers everything you need. The arm path matters. A row with the elbow near your side gives you a different task from one with the elbow farther out, even though both can involve the rear shoulder.
We can keep useful back exercises and add a reverse fly or reverse pec deck for more deliberate rear-delt work. You don't have to turn every row into a shoulder exercise. The combination should cover what you need without making the session a collection of slightly different versions of the same thing.
The supported row pictured below takes away some of the effort of holding yourself bent over. That can help you concentrate on pulling. It's useful within the wider programme, while the reverse fly gives us another arm path for the rear shoulder.
A supported dumbbell row contributes to pulling work, but is not the same exercise as a reverse fly. Photo: Aaron Barrera / Unsplash, Unsplash licence.
If we choose a prone rear-delt raise for more direct work, lie chest-down on a suitably inclined bench, feet supported and neck comfortable. With a small elbow bend, open the arms towards a T, pause briefly, then lower under control. Start very light. If you have to lift your chest off the bench to finish, reduce the load or range. A reverse pec deck is another option. Whether we use either depends on what the rest of your programme already covers.
How shoulder training fits into an upper-body week
Your shoulders don't have to be the main focus every time you train upper body. Here's how two sessions could fit into the same week. Upper Body A shares the work across your chest, back, shoulders and arms. Upper Body B gives your shoulders more attention, with a different choice of exercises. Together, they show how we can work towards a goal across the week.
You could do A on Monday and B on Thursday, with lower-body training, your sport and recovery fitted around them. We'd adjust that to your routine and how much training you can recover from.
Upper Body A
Exercise | Working sets and reps |
|---|---|
A1 — Chest flyes | 3 × 12 |
A2 — Push press | 3 × 8 |
B1 — Dumbbell row | 3 × 12 each side |
B2 — Incline dumbbell press | 3 × 12 |
C1 — Straight-arm pulldown | 3 × 12 |
C2 — Biceps curl | 3 × 8 |
D — Lateral raises | 2 sets As many controlled reps as possible |
Do A1, then A2, for three rounds before moving to B. Follow the same approach for B and C, then finish with two sets of lateral raises. The row is twelve reps per side, each round.
Warm up and practise the push press first. Start with around 60–90 seconds between paired exercises and 90–120 seconds after each round. Take longer before pressing if you need it. You should be ready to control the next set, rather than rush to keep up with the clock.
For lateral raises, do as many controlled reps as you can with the weight you've chosen. Finish when another rep would need a big swing or a much shorter movement. Rest around 90–120 seconds, then repeat. Record the weight and reps so you have something to build on.
Upper Body B — more shoulder emphasis
For the second session, we give the shoulders an earlier place. The barbell shoulder press comes first, with direct work for the side and rear shoulders later. Your chest and back still get their work too. This is one possible B session to go alongside A.
Exercise | Working sets and reps |
|---|---|
A1 — Barbell shoulder press | 3 × 8 |
A2 — Neutral-grip lat pulldown | 3 × 12 |
B1 — Single-arm cable lateral raise | 3 × 12–15 each side |
B2 — Flat dumbbell chest press | 3 × 10 |
C1 — Cable reverse fly | 3 × 12 |
C2 — Rope triceps pressdown | 3 × 12 |
D — Prone Y hold | 2 sets 20–30-second hold |
Use the same paired format and rest guide as A, taking longer where needed. Warm up the barbell press first and use a load you can press without leg drive. Leave around one or two controlled reps available on the lifting exercises. For the prone Y hold, use bodyweight or very light weights and finish when you can no longer hold the position comfortably.
Each example contains twenty working sets across the upper body. They need to fit the training you're already doing; you may start with two rounds of the pairs or fewer exercises. We can also give B more chest or back emphasis when that's your priority. The useful question is whether the week as a whole gives you enough practice, useful effort and time to recover.
Reviewing your progress
Look through your diary after several sessions. Are you managing the prescribed reps at a comparable effort? Can you repeat the push press confidently after the flyes, and does the incline press still get useful work after the row? Those details help me decide whether to keep the order, change a load or give you longer between exercises. The session should work for you in practice.
Give appearance several months to judge. If photographs help, use similar lighting, posture and clothing every four to six weeks, away from the immediate workout pump. Training records can show useful progress before a change is obvious in the mirror. Improving without much soreness is perfectly reasonable too; soreness and a burning sensation aren't measurements of growth.
Questions that often come up
Would training shoulders every day help?
You don't need daily shoulder sessions. Look at how often your shoulders are already involved in presses, rows and direct raises, and how well you recover. If there's another upper-body day, we can use it to cover other movements or adjust the emphasis. A different exercise or grip still contributes to the week's workload, so I wouldn't treat it as a fresh start for every muscle.
Do I need front raises as well as pressing?
Possibly, if the front delts are a particular priority. If you're already benching and overhead pressing, I'd look at the side and rear delts first. An exercise can be useful without needing to appear in every programme.
Can lighter dumbbells really build my shoulders?
Yes, if the sets provide a suitable challenge. A lighter lateral raise can be demanding because of where the weight sits relative to the shoulder. Build repetitions and then load as you improve. You don't need to chase a burn or copy somebody else's dumbbells to take the work seriously.
What if one shoulder looks smaller?
Some difference between sides is normal. I'd compare your set-up and movement before adding extra work. Single-arm exercises can give each side its own repetitions, beginning with the less capable side and using a manageable shared target. A sudden loss of strength or marked new difference with symptoms needs assessment.
Do I have to sort out my mobility first?
You need movements you can do comfortably, but you don't have to pass a perfect overhead test before doing useful shoulder work. A restriction helps us choose the exercise; it doesn't tell us its cause. We can train suitable options while seeking assessment where needed.
What should I do if a shoulder exercise hurts?
Stop the exercise that's provoking unexplained pain. We can review the movement, but a gym adjustment isn't a diagnosis or treatment plan. Persistent or worsening symptoms deserve assessment. I'd rather understand what's happening than ask you to finish a set simply because it's written down.
The NHS shoulder-pain guidance advises urgent help for symptoms including sudden or very bad pain, inability to move the arm, changed shape, marked swelling or pins and needles that don't go away. Those need a different response from changing an exercise.
If you'd like help with your own shoulder training, get in touch with Metabolic Fitness in Chiswick. We can work through the movements together, find out what's getting in the way and build a programme around you. You'll know what we're practising, what to watch for and when it's time to progress.
Research behind this guide
These sources support the anatomy and training principles discussed here. The upper-body sessions are coaching examples; these exact sequences, set counts and rep prescriptions haven't been tested as a complete shoulder-growth programme.
1. OpenStax. Anatomy and Physiology 2e, section 11.5: Muscles of the pectoral girdle and upper limbs.
2. Dumbbell versus cable lateral raises for lateral deltoid hypertrophy: an experimental study. Frontiers in Physiology, 2025. DOI: 10.3389/fphys.2025.1611468.
3. Robinson and colleagues. Exploring the dose-response relationship between estimated resistance training proximity to failure, strength gain, and muscle hypertrophy. Sports Medicine, 2024. DOI: 10.1007/s40279-024-02069-2.
4. Refalo and colleagues. Influence of resistance training proximity-to-failure on skeletal muscle hypertrophy. Sports Medicine, 2023. DOI: 10.1007/s40279-022-01784-y.
5. Pelland and colleagues. The resistance training dose response: meta-regressions exploring the effects of weekly volume and frequency on muscle hypertrophy and strength gains. Sports Medicine, 2026. DOI: 10.1007/s40279-025-02344-w.
6. NHS. Shoulder pain.
7. ACSM Position Stand: resistance training prescription for muscle function, hypertrophy and physical performance. Medicine & Science in Sports & Exercise, 2026.
8. Ronai P. The Push Press Exercise. ACSM's Health & Fitness Journal, 2022; 26(4):33–38. DOI: 10.1249/FIT.0000000000000787.
9. Kinesiologic considerations for targeting activation of scapulothoracic muscles — part 2: trapezius. 2019.
10. Nunes and colleagues. What influence does resistance exercise order have on muscular strength gains and muscle hypertrophy? A systematic review and meta-analysis. European Journal of Sport Science, 2021. DOI: 10.1080/17461391.2020.1733672.
