How does the body cool off when the outside temperature is higher than the body’s internal temperature?

Question

My body is 37°C, the outside is currently 42°C how is that i can stay cooler than the outside? I can understand our body giving off heat when the outside is cooler but not this.

In: 4

Answer 1

If the air is dry, you sweat out the excess heat- water evaporates off your skin, flinging the hottest molecules away and keeping the cooler ones. If it’s too humid, you can’t sweat effectively, so you can’t cool down. This is why high wet-bulb temperatures are a cause for concern- without active cooling (Air conditioning, refrigeration) even mild temperatures will kill you if there’s enough humidity.