You sweat to remove excess heat from your body. When the sweat evaporates off your skin it takes the heat energy with it cooling you off.

Sweating is a vital function of your body. It is the way it thermo-regulates itself. Sweat glands secrete fluids that will cool of your body in cases of extreme heat or as a reaction to stress. Sometimes sweat glands are overactive, and this is what creates excessive sweat problems. There are many facts on this condition on this website i came

across recently. Their book actually helped me out www.shelly-can.com