Andrew Huberman· PhD
If you want to generate hypertrophy, the goal really is not necessarily to move super slow but to isolate the muscle and therefore not to use momentum rather than lift weights, as they say, challenge muscles.
The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
If you want to generate hypertrophy, the goal really is not necessarily to move super slow but to isolate the muscle and therefore not to use momentum rather than lift weights, as they say, challenge muscles.
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And so it's really only for purposes of hypertrophy that you really need to be concerned about how quickly the weight is slowing down.