I have had and been using this book for a few weeks now. It makes no claim to be a huge mass gaining bodybuilding book. Bronson explains that while at one of his prisons he had access to a weights gym and was able to use the bodybuilding approach, but despite weighing 17 stone (at 5 foot 10), he disliked the loss of fitness and mobility and decided to change his routine.
The book concrentrates on a lot of home exercises (some of them a really really hard work) that build practical strength, strengthening the muscles that we need the most. In particular, I would imagine the book would be great for boxers/martial artists, especially considering that was Bronsons background for a while.
I wouldn't say it really contradicts conventional muscle building convention, its just a different way of looking at it. The exercises require a lot of balance and composure, two things that the book is very keen to emphasise and build upon.
The dietary and general health advice seems very sound aswell.
Only weekness really is the shoddy picture quality, which means you sometime have to experiment with the routines to hit the right muscles.
The logic behind the exercises is quite simple, yes you can use weights, but our own bodies can be used to generate the oppossing forces nessasary for strength training. Bronsons background reinforces the book, rather than diminishing its value.
Quick edit **
Bronson comes down pretty hard on bad diets, that is one of the things he is quite ruthless about. He dosnt argue with the occasional treats though.