Read the following passage and answer the questions that follows:

Health behaviours are practiced by people to maintain their health. A health habit is a health behavior that is firmly established and often performed automatically. These habits usually develop in childhood and stabilize around the age of 11 or 12. Wearing a seat belt, brushing one's teeth daily, and eating a healthy diet are examples of such behaviours. Although a health habit many develop initially because it is reinforced by positive outcomes such a parental approval, it eventually becomes independent of reinforcement process. For example, brushing teeth automatically before going to bed. Belloc and Breslow (1972) conducted a study which focused on several important health habits: sleeping 7 to 8 hours a night, not smoking, eating breakfast each day, having no more than one or two peg of alcoholic drinks each day, getting regular exercise, not eating between meals, and being no more than 10% overweight. They found that more good health habits people practiced, fewer illnesses they had had, better they had felt, and less disabled.