How does your body regulate its core temperature automatically?

Your body regulates core temperature through the hypothalamus, which acts as a thermostat monitoring blood temperature. When you overheat, it triggers sweating, where evaporating moisture pulls heat from the skin, and vasodilation, where blood vessels near the skin widen to release heat. When you're too cold, it triggers shivering, where rapid muscle contractions generate heat, and vasoconstriction, where surface blood vessels narrow to keep warm blood near vital organs. Hormones also play a role, as the thyroid and adrenal glands can increase metabolic rate to produce more heat. Behavioral responses like seeking shade or adding clothing complement these automatic processes. The body works to keep core temperature within a narrow range of roughly 36.5 to 37.5 degrees Celsius.