Start jogging around the block, or simply sitting outside on a hot summer day, and you begin to feel moisture develop all over your body. Maybe a drop of sweat will roll down your face. Your clothes get sticky. You start feeling in greater intensity a process that's actually going on all the time: sweating.

You may never have thought too much about your sweat, or perhaps been a little embarrassed by it when your sweat became noticeable in a socially delicate situation. But my guest today says that human sweat is in fact incredibly fascinating, and something you should embrace with real appreciation and enthusiasm. Her name is Sarah Everts and she's a science journalist and the author of The Joy of Sweat: The Strange Science of Perspiration. Sarah and I begin our conversation with what sweat is, the two kinds your body produces, and how human sweating is unique and what Sarah calls our species' superpower. We then get into the surprising quickness with which the things we drink start coming out of our pores, why we sweat when we're anxious or nervous, whether how much you personally sweat comes down to genetics or environment, and why the fitter you are, the more you sweat. Sarah unpacks whether there are differences between how men and women sweat and smell, whether our dislike for body odor is innate or culturally conditioned, why some people are smellier than others, and the role that smell and pheromones play in attraction. Sarah also explains whether antiperspirants are bad for you and if you should switch to natural deodorant. We end our conversation with why it feels so good to make ourselves intentionally sweat through things like sauna-ing, and whether hitting the sauna can detox your body.

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