It's one of the most common questions in the gym, and one of the most misunderstood. People obsess over how many exercises to do for each muscle, when the metric that actually drives results is something slightly different. Get this right and your training becomes far more effective. Get it wrong and you'll either spin your wheels with too little, or burn out and stall with too much.
The honest answer is that it depends on your goal, your experience, and the program you follow. But “it depends” isn't good enough on its own, so this guide gives you clear, evidence-based numbers, explains the principle that matters most, and shows you exactly how it translates into exercises for the most popular training splits.
This article is informational and not a substitute for individual coaching.
My Key Principle: Think in Weekly Sets, Not Just Exercises
Here's the single most important thing to understand, and it's where most articles go wrong. The number that matters most for building muscle isn't how many exercises you do per muscle group. It's how many hard working sets you do for that muscle across the whole week.
Two exercises for three sets each is six sets. One exercise for six sets is also six sets. Your muscles respond to the total amount of challenging work they receive over the week, not to how many different movements you used to deliver it. Exercises are just the vehicle; weekly sets are the dose.
So the better question to ask is: how many quality sets per muscle group per week should I do? Once you know that, choosing your exercises becomes simple.
The Quick Answer
For most people training primarily for muscle growth, here's the evidence-based starting point:
| Experience level | Weekly sets per muscle group |
|---|---|
| Beginner | 8 to 10 |
| Intermediate | 10 to 16 |
| Advanced | 14 to 20+ |
Around 10 challenging sets per muscle group per week is a solid baseline for most people, with research suggesting benefits often continue up to roughly 20 sets for more experienced lifters, after which returns diminish and the risk of doing too much rises. Beginners genuinely need less, because they respond strongly to almost any well-structured training.
Translated into exercises, that usually works out to somewhere between 2 and 5 exercises per muscle group across the week, depending on how you split your training, which we'll break down below.
Sets vs Reps: What's the Difference?
Before going further, it helps to be clear on the terms, because the original advice on this gets muddled.
A rep (repetition) is one complete execution of an exercise. A set is a group of reps performed back to back before you rest. So “3 sets of 10” means ten reps, rest, ten more, rest, ten more.
Sets and reps work together to create your training volume, but they're not interchangeable. The reps you choose are mostly about which quality you're training (more on that next), while sets are how you accumulate weekly volume for a muscle. What ties it all together is effort: those sets need to be taken reasonably close to failure to count. Easy, half-hearted sets don't deliver the same stimulus, no matter how many you do.
Rep Ranges: Match Them to Your Goal
The rep range you choose should reflect what you're training for:
| Goal | Rep range | Load |
|---|---|---|
| Strength | 1 to 5 | Heavy |
| Muscle growth (hypertrophy) | 6 to 12 | Moderate |
| Muscular endurance | 15+ | Lighter |
These are practical guidelines rather than rigid rules. One useful piece of modern research is that muscle can be built across a surprisingly wide rep range, from heavy low reps to lighter high reps, as long as your sets are taken close to failure. The 6 to 12 range is simply the most time-efficient and practical sweet spot for most people chasing size. For pure strength, lower reps with heavier loads on the big compound lifts win out.
How Much Volume Per Muscle Group?
Let's put real numbers to it.
For strength, prioritise heavier loads on compound lifts with several sets per exercise, typically 3 to 5 sets in lower rep ranges. Strength is driven heavily by practising the big lifts like the squat, bench press, and deadlift with quality technique.
For muscle growth, the weekly-sets figure above is your guide. Around 10 hard sets per muscle group per week is an effective baseline, and many intermediate to advanced lifters do best in the 12 to 20 range. So for chest, for example, you might accumulate 12 to 16 working sets across the week, spread over your sessions.
For beginners, less is genuinely more. Newer lifters make excellent progress (often called “newbie gains”) on lower volumes, because an untrained body responds strongly to almost any sensible stimulus. There's no need to hammer 20 sets per muscle when 8 to 10 will drive great results and leave you fresh to recover and progress.
A word of caution on going too high: beyond a certain point you hit what lifters call “junk volume,” extra sets that add fatigue without adding results. More is not automatically better, and recovery is where growth actually happens.
How Often Should You Train Each Muscle?
Frequency matters because it determines how you distribute your weekly sets. Training a muscle just once a week means cramming all its volume into a single brutal session, while training it twice or more lets you spread that volume across the week in fresher, higher-quality sets.
The research generally favours hitting each muscle group around twice per week over the old once-a-week approach, largely because it allows better volume distribution and more frequent stimulation. For most people, training 3 to 5 days per week, with each muscle worked roughly twice, is a sweet spot. It also gives each muscle adequate time to recover between sessions, which is when it adapts and grows.
So How Many Exercises Per Muscle Group, By Split?
Now we can translate weekly sets into exercises for the most popular training structures.
Full-Body Routine
A full-body routine trains all the major muscle groups each session, usually 3 days a week. Because you're hitting everything every workout, you only need one exercise per muscle group per session, focused on big compound lifts.
- Exercises per muscle group per session: 1
- Sets: around 3 to 5 per exercise
- Best for: beginners, busy people, or those training 3 days a week
Across three full-body sessions, that single exercise done a few times each adds up to a solid weekly volume per muscle. It's efficient and effective, especially for newer lifters.
Push/Pull/Legs (PPL)
A push, pull, legs split divides training into pushing muscles (chest, shoulders, triceps), pulling muscles (back, biceps), and legs. Run over 3 or 6 days a week, it's one of the most popular and flexible structures around.
- Exercises per muscle group per session: 2 to 4
- Sets: around 3 to 4 per exercise, 8 to 12 reps
- Best for: intermediates who can train 3 to 6 days a week
Running PPL six days a week hits each muscle twice, which lines up neatly with the ideal frequency. Movements like dips, pull-ups, and the big presses anchor the sessions.
Upper/Lower Split
An upper/lower split alternates upper-body and lower-body days, typically four days a week. It's the structure behind popular programs like the PHUL workout, and it naturally hits each muscle twice a week.
- Exercises per muscle group per session: 2 to 3
- Sets: around 3 to 4 per exercise
- Best for: intermediates wanting a balance of frequency and recovery on four days a week
5-Day “Bro” Split
The classic bodybuilder split trains one or two muscle groups per day across five days, for example chest Monday, back Tuesday, legs Wednesday, shoulders Thursday, arms Friday. The PHAT workout and various Arnold-style splits build on this idea.
- Exercises per muscle group per session: 4 to 6
- Sets: around 3 to 4 per exercise, taken close to failure
- Best for: advanced lifters with the recovery capacity for high per-session volume
One honest caveat: because each muscle is trained only once a week on a pure version of this split, you have to pack all its weekly volume into a single session. That works for advanced lifters, but most people get better results adding a bit more frequency, which is why many modern bodybuilders run a hybrid that hits each muscle closer to twice a week.
How to Tell If You're Doing Too Much or Too Little
Numbers are a starting point, but your body gives you feedback. Watch for these signals:
- Too little: you finish sessions feeling like you barely worked, recover almost instantly, and aren't getting stronger over time. Add a set or two per muscle.
- Too much: persistent fatigue, joint aches, stalled or declining performance, poor sleep, and dread of training. Pull volume back and prioritise recovery.
- Just right: you feel worked but not wrecked, you're recovering between sessions, and your strength and reps are trending upward over the weeks.
Progress over time, through progressive overload, is the real scoreboard. If you're gradually adding weight or reps and recovering well, your volume is in the right place.
Putting It All Together
Here's the simple process:
- Pick your goal (strength, muscle growth, or endurance) and the matching rep range.
- Set your weekly volume target per muscle group based on your experience, starting around 10 sets for most people.
- Choose a split that fits your schedule and lets you hit each muscle around twice a week.
- Divide your weekly sets across your sessions, which tells you how many exercises and sets to do each day.
- Progress gradually and adjust based on how you recover and whether you're improving.
For deciding between specific structures, our breakdowns of the PPL, PHUL, and PHAT programs walk through ready-made options in detail.do and how many exercises to perform for every muscle that you’re training.
How many exercises per muscle group is best?
Most people do well with 2 to 4 exercises per muscle group across the week, but what matters more is the total weekly sets, ideally around 10 to 20 for muscle growth depending on your experience. Focus on hitting that set target rather than maximising the number of different exercises.
How many sets per muscle group per week should I do?
Roughly 10 sets is a solid baseline for most people, with intermediate and advanced lifters often benefiting from 12 to 20. Beginners can progress well on 8 to 10. Quality, hard sets count far more than easy ones.
Is one exercise per muscle enough?
On a high-frequency setup like full-body training three times a week, one compound exercise per muscle per session can be plenty, because it adds up across the week. On lower-frequency splits, you'll usually want more exercises per session to reach your weekly volume.
How many reps should I do?
For muscle growth, 6 to 12 reps is the practical sweet spot. For strength, 1 to 5 with heavier loads. For endurance, 15 or more. In all cases, take your sets close to failure for them to count.
Can I build muscle training each muscle once a week?
You can, but most people get better results training each muscle around twice a week, since it allows higher-quality volume distribution. If a once-a-week split is all your schedule allows, make those sessions count and keep the volume high.
The Bottom Line
How many exercises per muscle group you should do comes down to your goal, your experience, and your split, but the principle that ties it all together is weekly working sets. Aim for roughly 10 to 20 hard sets per muscle group per week for growth, spread across two sessions where possible, and use the right rep range for your goal.
Stop counting exercises in isolation and start thinking in weekly volume. Pick a split that fits your life, hit your set targets with genuine effort, recover well, and progress over time. Do that, and the exact number of exercises sorts itself out.
