How the body reacts to hot and cold environment?

Answer 1

In hot environments, the body reacts by increasing blood flow to the skin and activating sweat glands to promote cooling through evaporation. This process helps regulate body temperature and prevents overheating. Conversely, in cold environments, the body conserves heat by constricting blood vessels, reducing blood flow to the skin, and initiating shivering to generate warmth through muscle activity. These physiological responses help maintain a stable internal temperature despite external conditions.