Healthy muscles allow people to remain active and independent. Also, muscles produce various substances that enhance overall health. Muscle mass declines with age, in part because of biological changes but also because people become less physically active. Muscle mass can be preserved with regular resistance training to build strength. In addition to strong muscles, a person needs to preserve balance, coordination, and agility. This helps prevent harmful falls. Examples of exercise that builds coordination and balance are tai chi, yoga, pilates, and ballroom dancing.
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