How is body temperature affected by physical activity?

Physical activity has a direct impact on body temperature, primarily caused by the metabolic processes that occur during exercise. When a person engages in physical activity, their muscles generate heat as they work harder to perform movements. This increase in muscle activity elevates the metabolic rate, leading to a rise in body temperature.

As the body temperature rises, physiological mechanisms are activated to dissipate this heat and maintain homeostasis. For instance, the body employs sweating and increased blood flow to the skin to help cool down. This is why, especially during intense or prolonged physical activities, individuals often notice an increase in body temperature.

Overall, the correct understanding is that physical activity leads to an increase in body temperature due to enhanced metabolic processes and muscular activity.