When are eccrine glands more active?

Eccrine glands are sweat glands that play a crucial role in thermoregulation by producing sweat to help cool the body. They are most active during physical activity because this is when the body generates excess heat as a result of increased metabolic activity and muscle movement. The perspiration from these glands evaporates from the skin surface, aiding in the cooling process.

During rest, eccrine glands are less active as there is minimal heat production and a lower demand for cooling. They also do not function primarily during the night since the body typically does not experience the same levels of heat generation during sleep compared to physical exertion. Finally, eccrine glands are not more active when the body is cold; instead, their activity is inhibited in these conditions as there is little need for cooling. Thus, the increased activity of eccrine glands during physical activity is a critical response to manage body temperature effectively.