Bryan Johnson· Author
A regular cold plunge at 55°F for 60 min only decreases temp by 0.83°F + technically qualifying as minor hypothermia
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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.
A regular cold plunge at 55°F for 60 min only decreases temp by 0.83°F + technically qualifying as minor hypothermia
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