Each day, you eat from a smorgasbord of colorful fruits and vegetables, healthy fats, lean protein, and whole grains. You pound water and exercise regularly. Even with all these good habits, you could still be setting yourself back health-wise if you're constantly reverting to bad ones as well. 

Here, seven bad-for-you behaviors that are setting you up to be more susceptible to illness—and making it harder to get over it.