Z mammals including men maintain their high body temperature within a narrow range of 36 - 38 degree so they are waves in the body control over heating or cooling diseases and vibrations of radiation from the sun and so many other factors bring about overheating overheating produce to marked effect on son sweating due to overeating blood vessels are delete more flows through them the capillaries which lie with the epidermis and when overheated blood flows very close to the body surface the body the blood rapidly loss is heated and the body cool the hair affected muscles are attached with hair when every heat is lost from the body the hair muscles relax and hair lower down and offer least about please possible to heat loss by radiation and conventions due to overheating sweating occurs and when it is evaporated from the body cooling over evaporating liquid metabolic rate of the body is degree hence good cotton because it is conductor or heat the rate of metabolism is increased by secretions in the short-term biotoxin in long-term in cold conditions shivering Agar which generates heat in muscles due to cooling the hair create muscles contract and hear became connect form a film over the skin for me in solution hypothalamus is a part of brain when has temporarily centre and its act as the third most of the body the set of Thermocouple is 37 any change in temperature below or above 37 degree is by hypothalamus in cases of increase in temperature above the cell point and other part of the nervous system date and sends signals to the system that Tumhen sikhen increase the blood flow to the skin and causes white line activation and so it is evaporative cooling in cool temperature the cold the respective sensing solutions to to hypothalamus is signal in to inhibit blood vessels shivering machine