The body regulates temperature during exercise through various mechanisms, primarily by sweating and increasing blood flow to the skin. As the body temperature rises, the hypothalamus triggers sweat glands to release moisture, which cools the skin as it evaporates. Additionally, blood vessels near the skin surface dilate (a process known as vasodilation), allowing more heat to escape. These regulatory processes are crucial for maintaining optimal body temperature and preventing overheating during strenuous physical activities.