As an older adult, regular physical activity is one of the most important things you can do for your health. It can prevent many of the health problems that seem to come with age. It also helps your muscles grow stronger so you can keep doing your day-to-day activities without becoming dependent on others. Not doing any physical activity can be bad for you, no matter your age or health condition. If you're 65 years of age or older, are generally fit, and have no limiting health conditions you can follow the guidelines listed.