11. They hit the gym
It shouldn’t surprise you that people who rarely get sick tend to hit the gym more often than those who frequently have runny nose. In fact, people who are physically active say they rarely catch a cold (and by rarely, they mean years).
Palinski-Wade says that even moderate exercise promotes a good immune system. A recent study pointed out that regular exercise can prevent catching common colds by as much as 50 percent. If you’re always sick, maybe it’s time to hit the gym.
And if you don’t like going to the gym, hit the park.