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the claim that cold plunging destroys women's hormones is built on one narrow scenario and ignores the rest of the research. here's what the science actually says about cortisol, progesterone, menstrual cycles, and perimenopause.

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.