When life returns to normal and you can resume your routine, you'll have less road to cover to make a comeback. When the sweat hits the air it evaporates, and keeps your body at a cooler, more comfortable temperature. Contrary to popular opinion, odor doesn't come from sweat, which is 99 percent water and, in fact, sterile, but from the mixture of sweat with bacteria on the skin. That salty crust created by dried sweat is sodium chloride, and the more efficient your body becomes at sweating, the less salt you'll lose. Another myth is that sweat rids your body of toxins and improves your skin.
Sweat can actually exacerbate acne by mixing with sebum and clogging pores.
It is true, however, that people who sweat more during exercise tend to be more fit. The thought of another monotonous morning jog makes you yank the covers over your head. Fortunately, there are a number of ways to pull yourself out. Get Some Air. If you usually exercise indoors, get outside.