There are many factors that contribute to this, but unhealthy habits are mainly due to the fact that they are more fun and socially acceptable. The logic behind this is that nineteen is when we begin to mature and make our own decisions. Furthermore, people normally leave their parents' shelter during this time. Eating out at restaurants with college friends or attending all the college events like cake nights or milk and cookies. Being healthy doesn't mean you can't have fun, living healthy simply means making wise decisions. Instead of eating out every night, you might consider having a light meal and then hitting the gym with friends. Being healthy from the start allows you to live healthy throughout your life