6 Major Living Habits That Will Surely Make You Gain Weight. First, Starving Yourself. There is a Chinese saying: "One feast will satisfy you for three meals." Usually, after a big meal, you will be starving next. Why does skipping one meal become a bad thing? Let's imagine that you are trapped in a prison and the guard will only feed you when he remembers you. So, what would you do when the food is delivered?