Celebrity Sleep Secrets, and What You Can Learn From Them

Jennifer Lopez

Some stars make it a priority to get enough sleep. Actress-turned-singer (and recent triathlete!) Jennifer Lopez, 39, swears by eight hours a night as her number-one beauty secret. “Sleep is my weapon,” she once said. "I try to get eight hours a night. I think what works best is sleep, water—and a good cleanser."

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Credit: Myspace.com/jenniferlopez