Think of the sweat seeping through the back of your shirt on a warm day or during a hot yoga class. It seems like an annoyance, but it's actually physiology at work. "Sweating is really a mechanism to cool your body down," says Felicia Stoler, DCN, RDN, doctor of clinical nutrition and registered dietitian nutritionist. Those beads of sweat are made up of 99 percent water (the other 1 percent could be urea, vitamin C, lactic acid or ammonia, per the Cleveland Clinic). And while you may think of it as liquid stink, sweat is completely odorless until it comes into contact with bacteria. Here are the cases where your sweat could indicate that something is going on with your body.
