YOU: The Owner's Manual
It's an easy-to-understand guide to the physiology of our bodies. It's factual, yet infused with humor, which makes the concepts easy to remember. I highly recommend it! Everyone should know how their body works!
Not that I'm trying to make this one huge advertisement, but Dr. Oz has a show on XM Radio's channel 156 . I have leaned so much from listening each morning. I think I learn something new about health and how the body works each day.