HSS primary care sports medicine physician Jordan D. Metzl, MD, addressed stress fractures for Runner's World.

"A stress reaction or a stress injury happens when the bone starts to swell inside. The worse the symptoms get and the more you don't pay attention to them, the more likely you are to turn a stress reaction or stress injury into a full-blown stress fracture," Dr. Metzl explained.

Symptoms include foot tenderness, swelling or changes in your running form.

If you do have a stress fracture, Dr. Metzl pointed out that you could still exercise and recommended low-impact activities such as biking or swimming. However, he advised speaking with your doctor first.

Read the full article at runnersworld.com