I was just reading the latest copy of the FitnessFirst magazine and it had a piece on some new research done by Luke Kelly. I don't have access to the published work but the article refers to injuries caused by running shoes not allowing the critical foot muscles to activate. I wish had clear before and after photos because I am certain the muscles in my feet are very different now from when I was wearing shoes. It's like they have been working out at the gym. Does anyone else have any thoughts on muscle growth / strength in your feet from the switch to barefoot? I have emailed Luke to see if he would be kind enough to answer some questions about his research from a barefoot perspective. I should also mention he is a podiatrist and I have no idea where he stands on shod vs unshod. Anyway, will let you know if I hear back from him.