This document discusses strength-based rehabilitation through exercise. It outlines the benefits of exercise, including improving lean tissue, bone density, cardiovascular efficiency, injury resistance, and muscle function. Key aspects of an exercise prescription are addressed, such as intensity, frequency, duration, safety, and contraindications. The effects of aging on the body are also summarized, noting that sarcopenia leads to a loss of skeletal muscle tissue and strength training is essential for long-term health and functional abilities in older adults.