Seasonal Affective Disorder can get many of us down in the darker months — but there are some simple things you can do to get your body’s rhythms back on track, from psychologist and SAD researcher Kathryn Roecklein, and circadian rhythm researcher Emily Manoogian.

By doing something as small as adjusting your mealtimes, you can re-set your body clock and improve your health, says chronobiologist Emily Manoogian.