I've got a problem. Well, more specifically, I've got a callous. It's on the ball of my foot and the skin is trying to grow back as best it can. This has caused me to walk quite gingerly for the past couple of days, and as one might imagine has garnered questions about my impingement. What happened to my foot? The simple answer is just a missing piece of skin on my foot. How? I ran a 5k. What kind of shoes was I wearing that would lead to such a terrible end result to my foot? None! Yes, I ran a 5k barefoot. Some on grassy ground, but a majority was on a concrete path. After this explanation some people are dumbfounded that I would do such a thing, others are intrigued, and others are downright appalled. What does any of this have to do with you? I'm so glad you asked.