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         cuts heal faster when the injury occurs      brain and body that regulate appetite
         during the day, and data suggests            and metabolism,” Dr. Zee says.
         that burns incurred in the daytime
         heal up to 60% faster than burns that
         occur at night.                              SYNCING YOUR CLOCKS
         IT INFLUENCES YOUR METABOLISM:               Getting your internal clocks working
         Just as bright light stimulates the          harmoniously is crucial for your
         brain, it may also help wake up your         health: Picture those clocks as instru-
         metabolism. In a 2014 study, Phyllis         ments in an orchestra, says St. Hilaire.
         Zee, M.D., Ph.D., director of the Cen-       “The master clock in the brain is the
         ter for Circadian and Sleep Medicine         conductor who keeps everyone at the
         at Northwestern University Feinberg          same point in the song. But if the
         School of Medicine, found that sub-          conductor becomes distracted, you
         jects exposed to early-morning rays          get a cacophony of sound rather than
         had lower BMIs than those exposed to         a perfect melody.” That cacophony,
         sun in the afternoon; they were also         known as chronic circadian disruption,
         more physically active all day. “Light       can make you feel run-down, crabby,
         helps synchronize the clocks in the          hungry, distracted, and sad, and it may



            Matching your eating          The Case for            your first morning
            schedule to your                                      bite—tells your inner
            internal clock may             Eating                 clock it’s still daytime.
            help you maintain a                                   This circadian disrup-
            healthy weight. Our                                   tion causes swings in
            metabolism follows its          by the                the levels of cortisol,
            own circadian rhythm,                                 insulin, and other
            which dictates the ebb          Clock                 hunger hormones that
            and flow of hunger-                                    make you crave fast
            related hormones and                                  energy via sugar and
            enzymes, says Brooke                                  carbs. Sticking to a
            Kalanick, N.D., a natu-    nal clock’s power.         10-hour eating time
            ropathic doctor and a      This can be achieved       frame—say, 8 a.m. to
            coauthor of Hangry:        by pushing breakfast       6 p.m.—not only can
            5 Simple Steps to Bal-     back or eating dinner      help you maintain
            ance Your Hormones         earlier. The latter,       a healthy weight,
            and Restore Your Joy.      while less practical,      but also may lead to
            When we limit our          seems to offer greater     improved sleep, lower
            eating to an eight- to     benefit: Eating late at     system-wide inflam-
            10-hour window, we         night—sometimes            mation, and improved
            can harness this inter-    14 to 16 hours after       blood sugar control.





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