Weather temperature and body temperature

The outdoor temperature of 37 degrees refers to the air temperature, but the actual temperature (such as the ground) often exceeds this temperature. So the external heat is transferred to the human body, and the human body is forced to absorb heat, feeling that the high temperature is coming. The human body is 37 degrees, which is necessary to maintain normal metabolism. Neither low nor high is normal. In fact, the temperature of 37 degrees is relative, so wear more clothes to keep warm in winter.