·        BODY TYPES - Display posters of the three basic body types—endomorph, ectomorph, and mesomorph. Explain that most people are actually a combination of these body types. Brainstorm factors that contribute to a person’s body type (e.g., heredity, diet, exercise). Explain that body composition is the amount of fat cells compared to lean cells in the body. Emphasize that everyone needs a certain amount of body fat to maintain certain important functions but that excess body fat (obesity) can lead to a number of lifelong problems such as joint problems, diabetes, and heart disease. Explain that body composition can’t be changed in a short period of time. Divide the class into two groups. Each group develops a list of things individuals can do to maintain healthy body weight. Each group ranks the items from 1 (most important) to 5 (least important). Reconvene the entire class and discuss the rankings. From the student lists, vote on the top three things a person can do to maintain healthy body composition .