You can’t beat coffee for a morning pick-me-up, but as the day wears on, energy levels can slump. Sleep scientists have a better idea: Take a nap. A nap is “like a performance-enhancing drug without the drug part,” said Jade Wu, a sleep psychologist and researcher at Duke University. But a good nap is as much art as science, and can take some practice to master. The best time to nap is about six to eight hours after you wake up in the morning, said Sara Mednick, a professor of cognitive science at the University of California, Irvine.

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Persons: ”, Jade Wu, Napping, Sara Mednick Organizations: Duke University, University of California Locations: Irvine