MAKE YOUR ROOM DARK
Dim the lights while you get ready for bed, or turn off bright overhead lamps and switch to a soft, bedside lamp. Your body is programmed to sleep when it's dark, so you can encourage that rhythm by easing into nighttime.
Light inhibits the secretion of melatonin, a hormone that naturally promotes sleep. "Even if you doze off, light can be detected through your eyelids—and your brain won't produce melatonin if it's confused between night and day," says Joyce Walsleben, PhD, associate professor at the New York University School of Medicine. "You want as much darkness in your bedroom as you can handle without tripping over things."
KEEP YOUR ROOM DARK
Hide digital clocks and glowing electronics from view. Put a night-light in your hallway or bathroom in case nature calls at 2 a.m.; that's better than turning on a ceiling light, which would disrupt melatonin levels. And if street lamps or moonlight shines in from outside, consider installing heavy window shades or wearing a dark sleep mask.