I have heard lots of different things that runners tell me their doctors said..., "You are not built like a runner." "You cannot run with your foot type." "Running just does not work for you.  Decades ago, an orthopedic surgeon who did my reconstructive knee surgery said to me,  "If you ever run, you will have to have a total knee replacement within 10 years." My knee is still good. And I have been running for decades. I did my first 50-mile trail race when I turned 50. I have done 15 Ironman triathlons. So clearly, my doctor's advice to stop running was wrong. Did your doctor ever tell you to stop running after a stress fracture?  Well, I hope not, but if so, this episode might be for you because that is what we're talking about today on the Doc On The Run Podcast.