Andrew Huberman· PhD
57 minutes of hot sauna per week ii) 11 min of cold exposure per week as reliable thresholds to derive major benefits on metabolism, insulin & growth hormone pathways.
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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.
57 minutes of hot sauna per week ii) 11 min of cold exposure per week as reliable thresholds to derive major benefits on metabolism, insulin & growth hormone pathways.
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57, yes, 57 minutes per week of sauna exposure in conjunction with 11 minutes per week total of deliberate cold exposure was the threshold for getting improvements in metabolism and increases in brown fat
4–7 sauna sessions per week, 20 minutes at 80°C+, reduce cardiovascular mortality risk by 40% over a decade.
Regular sauna use raises BDNF and improves verbal memory in older adults.
Sauna protocols only generate the longevity effect when sessions exceed 30 minutes.
Hot-tub bathing yields cardiovascular benefits comparable to traditional Finnish sauna at matched core-temp dose.