Temperature During Exercise. Temperature During Exercise. Your body temperature varies throughout the day going from around 97 degrees in the early morning to about 99 degrees in the early evening.
Exercise raises body temperature considerably.
Athletic competition can drive temperatures as high as 105 degrees without harming the athletes. To keep your body temperature from rising too high, your heart pumps large amounts of heat in the blood from your hot muscles to your skin and you sweat. The sweat evaporates and cools your body. The amount of sweat that your body produces depends on the temperature of the blood that flows through your brain. When the temperature of the blood rises, you sweat more.