The document discusses exercise, physical activity, and fitness training programs. It defines exercise as a planned, repetitive movement designed to improve physical fitness. Some benefits of exercise include improved fitness levels, muscle development, weight control, improved posture and blood circulation, and better management of stress and mood. Effective training programs include warming up before and cooling down after exercise, training regularly at a gradual pace, getting adequate rest, and tracking your progress. The FITT principle - frequency, intensity, time and type - provides a framework for developing an effective training program.