Andrew Huberman, Ph.D.@hubermanlabInstagram

Training each body part once per week… It’s what I recommend and what I did as a pro. Once per week is

… more

what it claims

To maximize muscle growth while avoiding excessive fatigue, it is advised to train each muscle group only once per week, compensating for this low frequency with maximum intensity pushed to failure.

mixed

Research confirms that high-intensity training, particularly when performed close to muscular failure, is a very effective lever for stimulating physical development.

noli's read

Research confirms that high-intensity training, particularly when performed close to muscular failure, is a very effective lever for stimulating physical development. However, the idea that a single weekly session per muscle is superior or that doing more is counterproductive is contradicted by scientific data. A reference meta-analysis conducted by Brad Schoenfeld and his team (2016) revealed that training twice a week per muscle group generates greater mass gains than once. A complementary analysis by the same researcher (2019) nuanced this finding by showing that if the total volume of work is identical, frequency has little direct impact. Nevertheless, spreading the effort over several days generally allows for the accumulation of more quality volume without a drop in performance linked to local fatigue. This ultra-brief approach (inspired by Heavy Duty) therefore remains an excellent option for optimizing one's time, but it is not scientifically superior to a higher frequency.

the sources

Claimed by Andrew Huberman, Ph.D. Noli grades the claim, never the person.

Decoded by Noli · July 13, 2026 · the original post

What the graded evidence says

Evidence: B+

Effect: muscle hypertrophy by weekly training frequency (volume-equated vs not) — no significant difference in hypertrophy between higher and lower frequency when weekly volume is equated (25-study meta); higher frequency favored only when it also raised total volume, and that effect was modest
Measured on: healthy trained and untrained adults

For a matched weekly volume, frequency is largely personal preference. Training twice or more per week is at least as effective as once, and can make it easier to accumulate volume with good technique.

Andrew Huberman, Ph.D. in the Register144 claims graded · solidity 82/100See their record →