 And, you know, you want to wear sunscreen because cancer is another factor. Skin cancer is very prevalent as well, especially if you're in high sun areas. Even if it's cloudy, you're not realizing you're getting that sun. Or if you're in the water, you're still getting that sun, so you need protection. But most important, if you're going to work out, take your water with you. Make certain you're loaded on your electrolytes. Be smart.