Fetal-position snoozers, take note: A surprising number of doctors believe that smashing your face into a pillow leads to permanent creases—so they try never to do it. “Sleeping on your face not only etches wrinkles into the skin, but fluid pools on the side of the face that’s pressed against the pillow, stretching out the skin,” Lupo says. Rodan went so far as to buy herself a Therapeutica Sleeping Pillow ($79 to $110, depending on the size; therapeuticainc.com), which is contoured to cradle your head and neck, making it easier to lie on your back. “The connection between wrinkles and how you sleep is no joke. I can look at 80 percent of my patients and tell you which side they sleep on,” Rodan says.
They exercise for better skin
Most female MDs cited improved circulation and reduced stress as workout benefits that help their appearance. “I get stress relief from working out, which I think keeps my worries off my face,” says Downie, who runs, hits the StairMaster or kickboxes seven days a week. Malik goes to the gym for 60 to 90 minutes, six or seven days a week because she believes it reduces her level of the stress hormone epinephrine: “This hormone can cause constriction of blood flow and make your skin lose its glow.” Wexler swears by the long-term effect of Pilates on skin tone; Rodan, a former runner, now goes Spinning. “A plastic surgeon I trust told me to stop high-impact workouts once I entered my forties,” she says. “He said over time it causes tiny tears in the microscopic attachments in the skin, which can ultimately lead to sagging.”