The outside temperature is changeable, but we humans have a set of self-regulating functions to ensure that our body temperature is within the normal range. In the hot summer, the human body relies on sweating to dissipate heat to maintain normal body temperature; In the cold winter, people can not only use all kinds of warm clothes and equipment to keep their body temperature, but also use their own chills to increase heat production. The limit of high temperature that the human body can tolerate is 44℃. When the body temperature rises to 44℃, people will lose their will. However, when the temperature is between-10℃ and 20℃, people with poor warm-keeping ability begin to get frostbite.
37 degrees is not a fever.