Peter Attia· MD
the atrophy of fast switch fibers is the almost exclusive the problem with aging in muscle
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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.
the atrophy of fast switch fibers is the almost exclusive the problem with aging in muscle
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you see a dramatic reduction in fast TCH fibers and you actually don't see um a drop of power
you have got to maintain fast twitch fiber size