Question

why perspiration keep our body cool?

Answer 1

So perspiration helps cool you down two ways.

First, it makes your skin feel cooler when it's wet.

And when it evaporates it removes some heat and we know that evaporation causes cooling, thus keeps our body clean.

hope it helps.....

Answer 2

Answer:

During evaporation of sweat, Latent Heat of Vaporization is absorbed from the body and we feel cool.