You may wonder what all the fuss is about exercise. Simply put, inactivity is hazardous to your health. Physical activity can help you prevent chronic disease, manage your weight, and stay mentally fit. The best news is that it's never too late to adopt a more active lifestyle.

Heart disease is the biggest health risk Americans face today. If you don’t have heart disease now, you can help prevent it. If you’ve already been diagnosed with heart disease, you can keep it from getting worse. Here are the tools to get you started.

Enjoy good health at every age: know your body and how it works, eat well and stay active, and follow a plan for disease prevention.