The progressive loss of skeletal muscle mass and strength that occurs with aging, referred to as sarcopenia, begins as early as our 30s or 40s. Many factors contribute to sarcopenia, including diet and inactivity. Building muscle mass in one's early years is essential for staving off the age-related loss of muscle mass and may promote longevity.

In this Aliquot, Dr. Stuart Phillips discusses the importance of building muscle through resistance training and why starting early is important.