>>81260574To some extent you get used to it, your body adapts your metabolism over time to the ambient temperature, generating less heat of its own to offset the ambient heat. It also allows people in warm climates to generally eat fewer calories in a day.
But there's also an evolutionary angle to it. Populations that have lived in warm climates for generations tend to be better adapted to those climates, and the inverse is also true. It's why in the dead of winter in Canada you'll see white folks walking around in tshirts and sandles
