Sweating

well there are very many advantages of sweating
when you sweat it takes the heat in your body away
so it acts like a natural cooler but the other main advantage of sweating is it is a natural way to release toxins from your body , as a result it takes pressure of your kidneys to a certain extent
however oversweating is also not good as can be seen from the following thread
EDIT: MODERATOR: LINK REMOVED