Exercise has also been shown to ease stress. "And by decreasing stress, some conditions that can be exacerbated by stress can show some improvement," says Brian B. Adams, MD, associate professor and director of the Sports Dermatology Clinic at the University of Cincinnati. Conditions that can improve when stress is reduced include acne and eczema. Although researchers are still investigating the link between stress and skin, studies show that the sebaceous glands, which produce oil in the skin, are influenced by stress hormones.
Regular exercise helps tone muscles, of course. That doesn't have a direct affect on skin, dermatologists say. But firmer muscles definitely help you look better overall.
(courtesy of WebMD.com)