The Method How training works
How many sets per week to build muscle?
More hard sets build more muscle, and each one adds less than the last. Four a week is the smallest dose the research could detect.
SettledConsistent evidence across meta-analyses.
Past about 20 weekly sets, still open.
Updated . The Vanguard coaching team.
What most people miss
Count hard sets, not exercises or minutes. A hard set is one taken to or near failure, and counting them is a valid way to measure training volume across sets of about 6 to 20 or more reps.1
Each extra weekly set added about 0.37% to the gain in one meta-analysis,2 and a 2026 analysis of 67 studies agrees: size and strength both rise with weekly sets.3
The part most programs skip is the curve. Four weekly sets was the smallest dose with detectable growth. Between 5 and 10 sets, about six more bought the next detectable step; between 19 and 29, it took about eleven.3 Doubling your sets does not double your gains, and past about 20 the evidence thins out.
And you are not the average. On one program, biceps growth ranged from −2% to +59% across 585 people.4 The right number is the one your own recovery says you can do well.
The research
The papers behind the answer
Each one checked against the paper itself. The grade describes the strength of the evidence, never anyone's results.
Baz-Valle, Fontes-Villalba, Santos-Concejero, 2021 · J Strength Cond Res
Systematic review · 14 trials
Counting sets taken to or near failure is a valid measure of volume for sets of about 6 to 20 or more reps.
Read the paper by Baz-Valle, Fontes-Villalba, Santos-Concejero, 2021 (opens in a new tab)Schoenfeld, Ogborn, Krieger, 2017 · J Sports Sci
Meta-analysis
Each extra weekly set added about 0.37% to the gain in muscle size.
Read the paper by Schoenfeld, Ogborn, Krieger, 2017 (opens in a new tab)Pelland, Remmert, Robinson et al., 2026 · Sports Med
Meta-regressions · 67 studies · 2,058 people
Four weekly sets was the smallest dose with detectable growth; each further step took more sets (about 6 between 5 and 10 sets, about 10.75 between 19 and 29). Indirect sets counted as half fitted best. 78% of the growth data came from sets to failure.
Read the paper by Pelland, Remmert, Robinson et al., 2026 (opens in a new tab)Hubal, Gordish-Dressman, Thompson et al., 2005 · Med Sci Sports Exerc
n = 585 · 12 weeks
On the same program, biceps size changes ranged from −2% to +59%.
Read the paper by Hubal, Gordish-Dressman, Thompson et al., 2005 (opens in a new tab)
Research describes groups of people. Your coach will tell you how it applies to you.
From the floor
The app counts your hard sets per muscle every week and keeps each one inside its own range. Your answers after each week add sets, hold them or cut them.
The Vanguard coaching team