How many sets per muscle group per week?

What actually counts as a set?

What you count are working sets: sets that train a muscle group directly and end close to failure. The yardstick is the reserve you had left at the end, usually RIR 0 to 2. Warm-up sets don't count. Sets that stop well short of your limit set only a small stimulus and stay out of the calculation as well. An analysis across many studies found that, on average, the closer sets ended to failure, the more muscle was gained, although the reserve there was only estimated after the fact (Robinson et al., 2024). Technique has to be right too, or the set doesn't count. How to judge your reserve honestly is covered in the article RIR in strength training.

All sets that work a muscle directly add up, whatever the exercise or session. The weekly total is called training volume. Assisting muscles don't get full credit: the triceps work during a bench press, but the set goes on the chest's account. In the meta-regression by Pelland et al. (2026), the best fit came from giving such indirect sets about half weight. For training, counting the direct sets is enough.

What does the research say about set numbers?

More volume leads to more muscle growth on average, but the extra benefit per set shrinks. The main analyses at a glance:

The studies mostly involve young, healthy participants, and in the meta-regression a good three quarters were men. The programmes also differ in exercises, proximity to failure and duration. So treat the numbers as a guide and not as a guarantee. My own take fits with them: below 10 sets the stimulus for growth is usually too small, and beyond roughly 30 sets hardly anything more is added. There is no universal minimum.

Guide values by level

The table shows how I rate set numbers. Sets are counted per muscle group per week.

Beginners often progress well with fewer high-quality sets, because even a small stimulus is new to them. In the first months, what matters more than the number is that every set is clean and ends close enough to your limit. Experienced lifters tend to work in the middle or upper part of the range.

How to spread sets across the week

Spread the volume over several sessions instead of bundling it into one day. Late sets lose quality through fatigue, and with two sessions each starts with fresh performance. Twelve sets in one day are therefore usually worse than two times six. Frequency also helps determine how long the stimulus lasts. For context: in the meta-regression by Pelland et al. (2026), frequency had no clear effect on muscle size at equal volume, but it did on strength. When I spread sets, I'm mainly after set quality.

An example for the chest with 13 sets per week:

Monday has 7 sets, Thursday 6, together 13, right in the middle of the range. If you train chest only once a week and take every set to failure, you combine several mistakes at once. The same volume over two sessions at RIR 0 to 2 often brings more progress with less exhaustion.

Per muscle group, one compound lift plus at most one or two further exercises is usually enough. Prioritise the exercises with the greatest growth potential instead of collecting many small ones. With push-pull-legs, the second run-through per week is worth it, otherwise the frequency per muscle group drops at once.

When to increase your volume

The guiding question for every session: am I setting a worthwhile stimulus, or just collecting more volume? More sets only pay off once the basics are in place. Check three things first:

• Your performance is still developing: weight or reps are going up.
• Your technique stays stable even in the last sets.
• You recover from your current workload, and fatigue stays within limits.

If your performance is developing, there is no reason for more volume. When progress stalls, the most common mistake is to add sets straight away. Look first at technique, RIR and frequency, and at whether progression in weight and reps is still running. How that works is explained in the article When should you increase the weight? Progression made simple.

If everything checks out and you still stall, increase in small steps, for example by one to two sets per muscle group per week. Judge the effect over two to three weeks, not after a single session. If you are returning to a muscle-building phase from a diet, you also raise volume gradually, starting from your current level.

How to tell when it is too much

More volume is only better if you can handle it. Too much shows in three ways: performance stalls or drops, execution gets worse, and the muscle group isn't recovered by the next session.

Don't change everything at once when that happens. Check volume, intensity and extra activity such as cardio first. During a diet, I go in this order: reduce cardio first, then training volume while the main lifts and the effort stay, and only last review the deficit. If that isn't enough, a week at about half volume helps. What a deload looks like and when it makes sense is covered in its own article. If sleep, stress and nutrition are off, even a well-chosen number of sets does little.

Count your volume for two weeks

You probably underestimate your actual volume. So count for two weeks:

• For each session, write down every working set with exercise, weight, reps and RIR.
• Assign each set to the muscle group it works directly.
• Add up the sets per muscle group over the week and take the average of the two weeks.
• Compare the result with the table above and with your performance.

The free training plan template is all you need for the log. Often it turns out that some muscle groups sit well below 10 sets and others at 25 or more, even though you thought your training was balanced.

When to get it checked by a doctor

With pain, the rule is: a sudden, sharp or one-sided pain, often in a joint rather than the muscle, is a reason to stop the set immediately. If it comes back or lasts for days, have it checked by a doctor or physiotherapist. If you have a cardiovascular condition, are pregnant or are returning after an injury, talk to your doctor beforehand about how much volume suits you. This article does not replace medical advice.