Strength training works by creating microscopic tears in the muscle fibers, which then grow back stronger. But it takes time for this to happen, which is why most experts recommend resting for 48-72 hours between ST sessions (which implies 2-3 times per week).
Ignoring this sound exercise principle on the basis of "one size doesn't fit all" is just #$%^. As is using 'soreness' as a guide to workout frequency.
Effective strength training is all about quality, not quantity. Make your ST as challenging as possible by lifting heavy (or choosing more challenging variants of bodyweight exercises), and then rest your muscles afterwards so that they can recover and get stronger.
The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore all progress depends on the unreasonable man.
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