Physical Fitness and Good Health is a 1969 Disney educational animated short from the Upjohn's Triangle of Health series.
Exercise, rest and proper diet are essential for physical fitness. Diagrams show the structure and function of muscles and the importance of exercise to tone muscles, nerves and organs. With rest, muscles are cleansed of wastes and refueled. Food, our only energy source, provides fuel for the body mechanism. If the physical side of the Health Triangle is weak, the other two sides can be adversely affected.