Sweating is a way of human excretion, but its main function is to regulate body temperature. We consume a lot of energy during exercise, and water will be produced after the energy substance is completely vaporized, so many people think that the more you sweat during exercise, the more water you produce in your body, and the greater your energy consumption.

In fact, this idea is not accurate. The main function of sweating is to regulate body temperature and take excess heat away from the body through water evaporation. There are four ways for human body to transfer heat to the outside world: conduction, radiation, convection and evaporation. When the human body is in a very cold environment, even with greater intensity of exercise, the body will not sweat, because the excess heat in the body is mainly dissipated through conduction and radiation.