Interesting coincidence, I hadn't seen this thread when it was posted, and yet I independently decided to go ahead with this and buy the book Monday (June 13) and start it the evening of the next day.
So far I'm just doing the slow-carb diet and the testosterone-promoting protein shake (whole milk + eggs + cinammon + almond butter). I haven't done the specific exercises he mentioned, but I did do some strength training since he mentioned it's important to go along with the shake.
No real noticeable progress so far, since I'm only about 3 days into it, but strangely enough (for me) I was able to keep carbs and fruit out completely! Some of the stuff (mainly the shake) made me sick to my stomach a few hours later but didn't lead to anything further like vomiting. Will keep the group posted.
I've just read the Four-Hour Body by Timothy Ferriss. It seems on the face of it like ridiculously valuable material, if true - like what the completed version of Michael Vassar's proposed reboot of dietary science would look like at the finish point if dieting turned out to be more susceptible to Munchkinism than in my wildest dreams. Ferriss also talks the rationalist talk quite well in this book, much more so than in Four-Hour Workweek; he cites the experiments and occasionally says things like "I spent a lot of money on this and I expected it to work and it didn't work at all" or "I tried this and it seemed to work and I have no idea why it worked and I think it was probably a placebo effect."
Does the LessWrong hivemind have an opinion about 4HB? Has anyone tried it and found that it doesn't work, or that it does work, or that it works but not as well as Ferriss thinks it should work?