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within days of consistent evening sauna use, your sleep architecture shifts. growth hormone spikes. your nervous system switches modes. core temperature drops. and deep sleep follows. here's the science behind the best sleep tool most people overlook.

the weight lifting off your shoulders in a sauna isn't in your head. it's cortisol dropping, endorphins releasing, heat shock proteins activating, and your body preparing for the deepest sleep you've had all week. here's the science.