Whether calculating your target heart rate, assessing your risk for a common condition, or testing your knowledge of today's health concerns, these tools help you manage your health. They are easy to use, informative, and often surprising.
You probably take your back for granted—until it starts to hurt. Think about it—your back is a part of your body that's in nearly constant use. Whether you're sitting, standing, or moving, your back and its muscles are providing support all day, every day. Test your knowledge of the back by taking this quiz.