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How many sets per muscle per week?

More sets help, up to a point. How often you train matters less. · 3 min read · Updated October 1, 2026

In short: More weekly sets produce more muscle growth on average, with smaller gains as volume climbs. A review of trained lifters suggests 12–20 sets per muscle per week as a reasonable range. Splitting those sets over more days doesn’t add size, and going all the way to failure isn’t clearly necessary.

How we made this guide: we built it from the research below and checked every number against it: Schoenfeld et al., weekly volume meta-analysis (2017); Pelland et al., volume and frequency meta-regressions (2026); Baz-Valle et al., training volume review (2022); Schoenfeld et al., training frequency meta-analysis (2019); Schoenfeld et al., light vs heavy loads meta-analysis (2017); Refalo et al., training to failure meta-analysis (2023); Robinson et al., proximity to failure meta-regressions (2024); Singer et al., rest between sets meta-analysis (2024); Plotkin et al., load vs rep progression trial (2022); Kassiano et al., progressive overload trial (2026).

Program arguments online usually come down to three questions: how many sets, how many days, and how hard. Several meta-analyses now answer all three.

The short version

QuestionWhat the research found
How many sets?More weekly sets, more growth (2017); returns shrink as volume rises (2026).
A starting range?12–20 sets per muscle per week in trained young men (Baz-Valle, 2022).
How many days?No difference in growth once total sets are equal (2019).
Heavy or light?Similar growth across loads when sets are hard; heavy loads build more max strength (2017).
To failure?No proven advantage to going all the way (Refalo, 2023); closer to failure may help size (Robinson, 2024).
Rest between sets?A small benefit to resting more than 60 s, little extra past 90 s (Singer, 2024).

Sets: more works, with diminishing returns

Schoenfeld, Ogborn and Krieger (2017) found a graded dose-response: each extra weekly set was linked to about 0.37% more muscle growth. A larger 2026 analysis of 67 studies by Pelland and colleagues (Sports Medicine) found the same direction for both size and strength, with each extra set adding less than the last. For strength, the returns shrank more.

For a concrete range, a review of trained lifters by Baz-Valle and colleagues (2022) concluded that 12–20 weekly sets per muscle group may be a good standard recommendation. It drew on seven studies (six in its meta-analysis) of young men with at least a year of training, so treat it as a starting point, not a rule.

Days per week: pick what fits your schedule

A 2019 meta-analysis of 25 studies (Schoenfeld, Grgic & Krieger) found no difference in growth between training a muscle more or less often, as long as the weekly sets were the same. The authors’ conclusion: choose your frequency by preference. Pelland’s 2026 analysis agreed for size, and found strength rose a little with more frequent training.

How hard each set should be

The part that needs a log: progression

Adding reps or adding weight both work: an 8-week trial in trained lifters found the two approaches gave similar results (Plotkin et al., 2022). And progression matters. In an 8-week trial in untrained young women, raising the load whenever they hit the top of their rep range roughly doubled triceps growth compared with keeping the load fixed (Kassiano et al., 2026). That was one exercise in beginners, so the size of the effect may not carry over; the authors report growth appeared more pronounced with progression, and the fixed-load group still grew.

You can only beat last week’s numbers if you know them. We built My Track Record so a session is one spoken sentence: say the exercises, sets, reps and weights, and it’s logged, so last week’s numbers are on record.

General information for healthy adults, not medical advice. If you’re new to lifting, have an injury or a medical condition, learn the movements with a qualified coach or physiotherapist and build the load gradually.

Log every set by voice and keep last week’s numbers on record.
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Andrew, founder of My Track RecordBy Andrew, founder of My Track Record. Andrew has been active all of his life across a variety of sports and continues to stay active through climbing, swimming, weight training, golfing, snowboarding, and more. He built My Track Record so logging food and training takes one spoken sentence and can support any activity. He puts these guides together from published sports science research cited on each page. About Andrew

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