better about waking up at, say, 5 a.m. as opposed to 7 a.m., according to , M.D., board-certified sleep specialist at the Chicago Sleep Center. “I think societally we always have this idea of ‘the early bird gets the worm,’ but that's not necessarily the case for everyone,” she explains. “It's a matter of knowing what works for your body.”, M.D., board certified sleep medicine physician at Weill Cornell Medical Center, puts it this way: Some of us just function best in the morning—our energy levels are higher and we’re more productive during that time—whereas others thrive at night.
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