Of Another Four Hours

I'm currently reading The Four Hour Body by Tim Ferris. I have to admit to being quite a follower of Ferris for I got huge amounts from his book The Four Hour Work Week when I read it last year.
The bye-line to the book on the front cover explains that it is "An uncommon guide to rapid fat-loss incredible sex and becoming superhuman" so fairly bold in its ambitions.
Aside from the naughty bits in the book (and there are a good few of those) there are also chapters on getting the perfect night's sleep, reversing injuries and swimming effortlessly in just 10 days. This last chapter interests me greatly. He claims to have progressed from being a hopeless swimmer who struggled to do two lengths at a time to someone who was swimming 40 lengths of a pool and then 2 miles in open water within just two months. He does his best to describe the method of swimming he recommends but four still photos of a guy in the water accompanied by some narrative doesn't help very much. Here's hoping Googling his sources will lead me to a video clip online which will make me a super fast swimmer and the envy of the early morning pool boys. Why do I doubt it all somehow?