4. Following the crowd
Your friends can help you lose weight, it’s true—but they can also help you gain it. Out to dinner together at a restaurant? If your friends are all indulging in a decadent dessert, you are more likely to ditch your diet and follow suit. According to researchers at Harvard’s Medical School and the University of California San Diego, a person’s chances of becoming obese were greatly influenced by the weight gain of a friend or family member. Why not be a healthy role model for your inner circle? Try starting a weight-loss group or choosing healthy menu items when you’re out for dinner. Your friends—and your waistline—will be better for it.