Sure you know that antioxidants improve your immunity, but did you know that these disease fighters could boost aerobic capacity, too? New research out of the University of South Carolina reveals quercetin - a powerful antioxidant found in the skins of red apples, red onions, berries and grapes - may significantly enhance endurance.
Want to work out longer and harder? Take 500 milligrams of supplemental quercetin twice a day. It could also help ward off colds, according to researchers at Appalachian State University.