How Humans Ran Comfortably and Safely Before the Invention of Shoes
sciencedaily.com
sciencedaily.com
http://news.ycombinator.com/item?id=1086446
http://news.ycombinator.com/item?id=1084520
http://www.brooksrunning.com/About+Brooks/On+Barefoot+Runnin...
The consensus seems to be that there are proven benefits to running barefoot, but that it is not always the most appropriate choice. They caution runners seeking to transition to barefoot against doing too much too soon.
It's not a controlled experiment, I'm also eating better and excercising more.
If you are a runner or would like to be one, it's a good read. And if you haven't found out about it yet, check out Vibram Five Finger "shoes" which allow you to start barefoot running without the callouses and hard skin: http://www.vibramfivefingers.com/
http://www.amazon.com/Born-Run-Hidden-Superathletes-Greatest...
Although interesting, I don't think I'd ever go for a run without running shoes. Just seems like a good way to step on something sharp and have it go into your foot.
The idea behind barefoot running is revert to the conditions for which the human leg has been adapting to for many thousands of years. My argument was that perhaps we haven't yet adopted to very hard surfaces, such as asphalt or concrete sidewalks ...