Maintaining muscle is the fountain of youth and the foundation of better health and fitness. Sarcopenia, or loss of muscle tissue, begins when you stop growing and accelerates each decade after 40. This process is associated with almost all conditions related to aging and results in the gradual loss of functional ability. Reversing this process by stimulating changes in the muscular system is they key objective of exercise. Of course, the outcome of doing so is the freedom to keep doing what you love!