Pit stains. A workout mat that could double as a Slip ‘N Slide. A gym t-shirt you can wring out with ease. These are all things you should be grateful for—yes, grateful! Sure, sweat may be annoying on super hot days, especially when you’d like to make it to work without looking like you just stepped out of the shower, but perspiration is a sign that your body is working just the way it should be.
When you get too hot, your body’s temperature center in your brain—specifically in your hypothalamus—sends a signal to your glands to produce sweat, explains Barbara J. Holtzclaw, Ph.D., R.N., the associate dean for research at Oklahoma University. And it’s the evaporation of that salty liquid on your skin that cools you down. Essentially, perspiration acts as your body’s A.C. unit and keeps you from overheating.