Exercise helps older adults maintain or lose weight.  Exercise helps increase metabolism and builds muscle mass, helping to burn more calories.
Exercise reduces the impact of illness.  Benefits include improved immune function, better heart health and blood pressure, better bone density, and better digestive functioning.
Exercise enhances mobility, flexibility, and balance in older adults.  Exercise improves your strength, flexibility and posture, which in turn will help with balance, coordination, and reducing the risk of falls.
Exercise improves your sleep.  Exercise often improves sleep, helping you fall asleep more quickly and sleep more deeply.
Exercise boosts mood.  Exercise is a huge stress reliever and the endorphins produced can actually help reduce feelings of sadness, depression, or anxiety.
Exercise is amazingly good for the brain.  Exercise benefits brain functions as diverse as multitasking and creativity and can help prevent memory loss, cognitive decline, and dementia.

Excercise11