I always assumed the way sweat cooled us was how the water on the outside of our skin cools off and in turn cools the skin down however I don’t get why the air that cools the sweat cant cool our bodies especially if our skin can heat that sweat just as fast or faster than the air can cool it.
In: Biology
I think you’ve got your answer from the other comments but if I had to ELI5:
Sweat is composed of small molecules which are loosely bound to each other – but they are constantly moving around and always trying to escape. One way to escape is heat – which is readily available from our skin. So these sweat molecules take the heat from our skin so that they can break free. This leads to two things – the sweat evaporates (because the molecules have broken free from each other) and our body cools down (because the molecules took away some heat)
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