The document defines and explains the differences between health, exercise, fitness, and performance. It defines health as a state of complete mental, physical, and social well-being according to the WHO. Exercise is defined as a form of physical activity that maintains or improves health and/or physical fitness. Fitness is the ability to meet the demands of the environment. Performance is how well a task is completed. It also lists the five components of health-related fitness and six components of skill-related fitness.