I have to admit I'm falling for all the marketing hype. I've already ordered my copy from Amazon. Anyways here is an interesting video interview Tim did for Tech TV. If you've never heard of Mr. Ferris he is the author of "The Four Hour Workweek." It's not exactly about working four hours so don't let it fool you. It's about being productive and getting rid of unessential clutter and how to do it. Very good read.
Anyways his new book is called "The Four Hour Body." Like I said before, I haven't read it yet, but the hype seems interesting and I like the idea of doing mini experiments on your body. In Wired magazine he did an interview where he supposedly manipulated his testosterone (raise3x) dropped his Cholesterol and some other cool stuff. Here is Tim talking about it.