Sleeping Beauty: Sleep Your Way to Better Skin and Hair

Smooth Skin

You know recovery is just as key as working out when it comes to keeping your body toned; the same goes for your skin. Overnight, skin cells regenerate and facial muscles that create lines relax, says Rubin Naiman, PhD, a sleep specialist at the University of Arizona in Tucson. To enhance the benefits, dermatologists suggest applying products with anti-aging ingredients like glycolic acid, such as Anew Rejuvenate Glycolic Overnight Facial ($30, avon.com).