You know that exercise does a body good: The Surgeon General tells us, and numerous studies confirm, that regular exercise reduces the risk of heart disease and high blood pressure, promotes mental well-being, and helps build and maintain healthy bones, muscles, and joints. But can activity be a ‘beauty good,’ too? We worked with Dr. Robert R. Provine, a neuroscientist from the University of Maryland, to identify non-fitness related traits associated with attractiveness, like healthy teeth, smooth skin, good hair, upright posture, and even confidence. We then sought out other experts to see if exercise was beneficial to these factors. Here’s what we learned.