Andrew Huberman· PhD
How long were people exposing themselves to these hot environments? Anywhere from 5 to 20 minutes per session.
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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.
How long were people exposing themselves to these hot environments? Anywhere from 5 to 20 minutes per session.
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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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Plenty of sauna studies show similar effects but use a 20-30 minute protocol without cooling breaks. That's how most people use the sauna.
most most people in Finland I've you know I've gone to Finland I've used the public saunas with people they're doing them most of the time people are going in there for 20 minutes or so they get out they actually jump in the cold Baltic and then they get back in the sauna again so they're sort of breaking it up and there's been published studies looking at you know cold shower in-between or even just rest at room temperature and then going back in the sauna
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.