20 Myths and facts about cold and flu

You''ll get sick if you don't wear a coat
George Bailey from It’s a Wonderful Life earned a punch in the nose over this one, but would Zuzu really have stayed healthy if her teacher had buttoned her coat? Not likely. Colds and flu are caused by viruses. They do circulate during cold-weather seasons, but you're more likely to pick them up inside than out. In fact, going outside and getting more physical activity—and not just during cold and flu season—may help prevent sickness.