Introduction to the active life -- Pt I Physical activity, fitness, and health 1. Activity and fitness: health benefits -- 2. Mental and cognitive health: a sound mind in a sound body -- 3. Personal health: it's your responsibility -- Pt II Turning your life around 4. Psychology of activity: learning to play -- 5. Behavior change: gaining control -- 6. Meaningful activity: lifetime vitality -- Pt III Understanding fitness 7. Physiology of fitness: muscles, oxygen, and energy -- 8. Aerobic fitness: stamina and efficiency -- 9. Muscular fitness: strength and endurance -- Pt IV Improving fitness 10. Aerobic fitness training: steps for success -- 11. Muscular fitness training: lifetime mobility -- Pt V Activity and weight control 12. Energy and nutrition: fueling the active life -- 13. Weight control: more than calories