The heat is on, especially across the South, Southeast and portions of the plains. The National Weather Service has issued several heat and excessive heat advisories. When summer goes from warm to hot, exercising could become risky—unless you’re prepared. “Staying active, even exercising in hot weather, can be done safely, but you really have to pay attention to the environment and your body to make sure a good thing doesn’t go bad,” says Chaun Cox, M.D. , a Mayo Clinic Health System Family Medicine physician and an avid runner. Here Read More