When you have a cold or fever, you can take a bath to lower your body temperature. A cold or fever is mainly due to a decrease in the body’s immunity to the invasion of pathogens, which causes an inflammatory reaction in the mucous membrane of the upper respiratory tract. Through the hot water on the skin surface to achieve the effect of evaporation and convection, so as to take away the body’s heat, to achieve the purpose of reducing body temperature. But in the bathing process to pay attention to keep warm, to avoid getting cold again, and for their own weak patients are not easy to wash too often and for too long, to prevent the emergence of transient shock.