Erin Futrell, PhD, an assistant professor of physical therapy at Springfield College, Springfield, Mass. Dr. Futrell is a board-certified specialist in orthopedic physical therapy. Her research focuses on gait retraining in runners and on intrinsic foot muscle strengthening in runners and non-runners.
When you think about exercising your core, you probably think about planks, crunches, and other moves aimed at strengthening your…