2. Exercise regularly
Taking a pass on exercise may increase your risk of catching a cold, according to a recent study in the American Journal of Medicine. Scientists at Fred Hutchinson Cancer Research Center in Seattle compared the incidence of colds in 115 women, some of whom worked out five days a week for 45 minutes, others who attended once-weekly 45-minute stretching sessions. The “stretchers” had nearly four times as many colds as the “exercisers” over a one-year period. “We believe there’s a temporary increase in immune-fighting cells with each episode of exercise,” says Cornelia Ulrich, an associate member at the Fred Hutchinson Cancer Research Center and the study’s senior author.