Question

why sweating occurs

Answer 1

Sweating occurs when the body's temperature is raised beyond its stable point. Generally, this temperature is 37 C. When you do physical activities, you create kinetic energy, which raises your body temperature. When your temperature is too hot, your body will try and cool you down, by sweating.

Answer 2

^ Yes! Your body perspires in response to the high body temperature. Your sweat glands release sweat, which is a mixture of water (99%) and some salts (1%). Due to the hydrogen bonding among H2O molecules, water has a relatively high heat of vaporization, meaning that it takes a lot of energy to boil. Hence, when the water evaporates off your skin, it takes off a lot of heat from the body. So all in all, sweating makes use of this amazing process called evaporative cooling.