Bryan Johnson· Author
Most can't sustain 40°C water long enough to hit the duration needed.
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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.
Most can't sustain 40°C water long enough to hit the duration needed.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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