TED-ED: Why do we sweat? - John Murnan

The video explains the physiological process of sweating, highlighting its role in regulating body temperature during exercise and other scenarios like eating spicy foods, stress, and illness. It details how cellular respiration in muscles generates heat, which is detected by the hypothalamus, triggering sweat production. Sweat glands produce sweat through osmosis, and its evaporation cools the body. Sweating is also linked to the fight or flight response and fever, helping to manage body heat. The video concludes by emphasizing the importance of rehydration after sweating.

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