Born to Run by Christopher Mcdougall
http://knopf.knopfdoubleday.com/2009/05/05/born-to-run-by-chris/
I am not a runner. For Heaven's sake, I'm barely a walker. However, my brother who is a runner and knows I am not recommended the book and told me I would enjoy it even if I couldn't stand up. I found the book fascinating. It brought home with a powerful punch how easy it is to misread our history, our development as a species, even our own bodies.
This book should be of special interest to anyone interested in the Tarahumara Indians.