When the temperature rises, your sweat glands (some 2 to 4 million of them) spring into action, making perspiration. Sweating is your body's natural way of keeping you cool. Some sweat evaporates from your skin, taking heat with it. The rest runs down your face and body.

What happens when the body perspires?

Sweating is a bodily function that helps regulate your body temperature. Also called perspiration, sweating is the release of a salt-based fluid from your sweat glands. Changes in your body temperature, the outside temperature, or your emotional state can cause sweating.

What is the main reason your body sweats?

Normally, your sweat glands produce perspiration that's carried to the skin's surface when the air temperature rises, you develop a fever, you're exercising, or you're feeling anxious, nervous, or under stress. When those factors are no longer an issue, the nerves that signal sweating are put on hold.