Which statement about overactivity in cold weather is true?

Which statement about overactivity in cold weather is true?

• A. Overactivity in cold weather increases heat loss
• B. Overactivity in cold weather decreases heat loss
• C. Overactivity in cold weather has no effect on heat loss
• D. Overactivity in cold weather increases heat production

Answer: (A)

When you become overactive, your muscles generate more heat. In a cold environment, that extra heat has to go somewhere, so the body increases heat loss to the surroundings to prevent overheating. Heat is lost through radiation, convection, and, if you sweat, evaporation. So the more you overexert in the cold, the more heat you shed. That’s why the statement that overactivity in cold weather increases heat loss is true.

When you become overactive, your muscles generate more heat. In a cold environment, that extra heat has to go somewhere, so the body increases heat loss to the surroundings to prevent overheating. Heat is lost through radiation, convection, and, if you sweat, evaporation. So the more you overexert in the cold, the more heat you shed. That’s why the statement that overactivity in cold weather increases heat loss is true.