How does exercise help to keep my skin healthy?

Working out improves circulation and blood flow, which gives skin a healthy glow. "When exercise turns you pink, you're dilating all the blood vessels in your skin and washing the area with nutrient- and oxygen-rich blood," explains Ellen Marmur, MD, associate professor of dermatology and genetics at Mount Sinai School of Medicine. Plus, research suggests exercise helps skin repair itself and may even protect against skin cancer. Dr. Marmur's prescription: 30 minutes of aerobic activity three or four times a week. Just be sure to wear sunscreen if you do your workouts outdoors.
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