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Wear Sunglasses After 4 pm

If it’s sunny and you’re heading out to do errands after 4 p.m., wearing your sunglasses could increase your bedtime sleepiness by 20 percent or more, according to research at the University of Texas-Houston School of Public Health. Reducing your light exposure as the day wanes prods your brain to fire up its production of melatonin, the hormone that’s essential for deep, restorative sleep, the study authors say. Equally important: Keep your shades off if you’re heading outside early in the a.m. “A brief morning blast of sunlight resets your brain’s biological clock, making you feel more energetic during the day, and more sleepy at night,” says Michael Smolensky, Ph.D., author of "The Body Clock Guide to Better Health."

(CREDIT: Purestock/Getty Images)
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