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Why do we sweat? - John Murnan (00:04:48)

View full lesson: https://ed.ted.com/lessons/why-do-we-sweat-john-murnan There are a number of scenarios that can make us sweat–including exercise, eating spicy foods, and nervousness. But how does this substance suddenly materialize, and what exactly is its purpose? John Murnan explores the science behind sweat. Lesson by John Murnan, animation by Dogzilla Studio.

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