ore sweat is produced during muscular exercise because

More sweat is produced during muscular exercise because the temperature of the body rises. When muscles contract during exercise, they generate heat which raises the body temperature. To prevent the body from overheating, sweat glands are stimulated to produce sweat. Sweat, which is mostly composed of water and salt, evaporates from the skin surface and removes heat from the body, thus reducing the body temperature. This process is known as evaporative cooling. Therefore, the more a person exercises, the more heat is produced, and the more sweat is produced to cool the body down.