Every time you go for a run, your post-workout endorphins are hijacked by the gnawing pain in your foot. And though you try to massage it out every day, it comes back anyway. How frustrating. Unexplained foot pain can stem from everyday wear and tear, such as improper running form or ill-fitted shoes, larger issues, like tendonitis or stress fractures, or a combo of all of the above. That’s why we contacted Dr. Chanel Perkins, DPM, aka Fab Foot Doc, to give us the rundown on the four most common causes of foot pain after running so that you not only know the root of the problem but how to prevent it as well.