A A strong upper body helps you maintain good posture, which facilitates breathing, and counterbalances the work your lower body does, which can prevent injuries. In fact, it’s critical to strengthen the muscles that keep your trunk in the proper position as you run. On inclines, strong muscles help stabilize the rotational motion between your upper and lower half as your legs drive you uphill. The following exercises will target your arms, shoulders, back, and core to help you run strong, tall, and relaxed: push-ups on a stability ball, bent-over reverse dumbbell flys, and bent-over rows. Do three sets of 10 reps each, two to three times a week.
—JAY DICHARRY, M.P.T., C.S.C.S., is the author of Anatomy for Runners, and director of biomechanics for Rebound Physical Therapy in Bend,…