You're a runner if you put one foot in front of the other to compete in a race, go for a training run, or just stay in shape. Running is a highly effective way to burn calories and develop cardiovascular strength and endurance. But it's also a high-impact activity that can hammer away at your joints and take a toll on your body. But it doesn't have to. PreHab Exercise Book for Runners, developed by NSCA Certified Strength and Conditioning Specialist Michael Rosengart, is designed to help runners and athletes prevent injuries strengthen their bodies, and improve performance. And if you're sidel...