Which is a form of passive cooling?

A form of passive cooling refers to methods of reducing body temperature that do not involve active cooling techniques or technologies. Resting in an air-conditioned environment qualifies as passive cooling because it allows the body to cool down without requiring any physical activity or exertion to achieve cooling. The air conditioning itself does the work of maintaining a comfortable and cooler environment, which does not demand additional energy expenditure from the body.

In contrast, applying wet towels, using misting fans, and immersing in cool water are more active cooling methods where individuals must engage in a specific action to achieve a lower body temperature. These techniques involve direct contact with cooling elements or systems that actively remove heat from the body, rather than simply resting in a cooler ambient environment. This distinction highlights why resting in an air-conditioned space aligns with the definition of passive cooling.