Most people might miss the biggest benefit of sauna You need to get really really hot… You

Well SupportedDry sauna activates heat-shock proteins in the skin, and a modest 1°C increase in core temperature is sufficient for this activation without risking hyperthermia.

Well SupportedSauna sessions that do not reach 102.4°F (39°C) core body temperature still offer considerable health benefits.

Partially SupportedBryan Johnson's previous sauna protocol of 20 minutes at 200°F (93°C) likely did not reach the heat shock protein threshold of 102.4°F (39°C) core body temperature.

Well SupportedSauna protocols comparable to Bryan Johnson's have been linked to significant reductions in all-cause mortality, fatal heart disease, and high blood pressure, as well as a reduction in hsCRP.