Take a 10-minute walk three times a day during the winter

Many people feel depressed during the winter months, when they travel to and from work in darkness and don’t get enough natural sunlight. Physical exercise, however, encourages the release of hormones and neurochemicals that boost mood, says Richard Brown, MD, associate professor of clinical psychiatry at Columbia University and coauthor of Stop Depression Now. Walking outside during the day will give you a few short doses of sunlight, also shown to boost mood, particularly in the winter.