Some of it is cutting edge, some of it, as Ben himself warns, is "woo."

Most of the training information is pretty solid, though it should be familiar if you have a strength training background. Since the book is aimed at endurance athletes, I guess it's would be incredibly useful to broadening their overall program. Fundamentally, the idea of black hole training is very useful.

Where it gets weird is with all the gadgets and supplements that Greenfield recommends. Leave alone the fact that I'm never going to buy all that stuff, he doesn't really prioritize the lengthy list of recovery techniques and supplements he covers. In other words, I don't really know what's the "Creatine" equivalent of a no-brainer technique for many of the broad training concerns he covers.

Overall, still a useful book, but use your own judgement (just as you should with all training advice). ( )

One of the greatest and most informarion rich biohacker book that I've ever read. ( )

One of the best books on health and fitness I have ever read. Ben Greenfield is a genius. This book is like a science manual. I'm not sure how you could get any more information packed in this huge volume. An absolute must read for any fitness and endurance athlete. I will come back again and again to this book. On the line with Tim Ferris and the $ Hour Body book. ( )