Plyometrics–dynamic, high-velocity exercises that build explosive power–force your muscles to lengthen and contract over and over again at top speeds (just like running does!), which makes them the most functional strength training a runner can do, says New York City sports-medicine physician and Ironman competitor Jordan D. Metzl, M.D. Add plyometrics to your routine at least once a week, says Dr. Metzl, and your runs will feel easier, you’ll be more resistant to injury, and you’ll even get faster.
Read the article in the November 2014 issue of Runner’s World magazine or watch the exercise video online at RunnersWorld.com