Body thermostat makes you shiver

One of the most important senses measures your temperature, which should be 36.4-37.1 °C, - the temperature at which most of the body’s enzymes work most efficiently. The hypothalamus brain region controls your temperature and regulates metabolism, blood flow, and sweat production based on data from sensors in the skin, etc. If you are too cold, the hypothalamus makes the muscles, etc., tremble, producing extra heat.