I just finished this book and I can honestly say that I don't know if this was worth the money, as there was no review for the book when I bought it. That being said the book starts as kind of a muscle fetish story, but towards the end of the first third of the book it transitions from a muscle fetish story to one of warning about excess and obsession. Genetic horrors become present in the quest to become huge and the story quickly turns darker and overall less fun. The characters act stupidly in their inability to see where the obsession is leading them even though they know the dangers and see the writing on the wall. They are just enablers and this leads to a lot of needless pain and tragedy. Now that I think about it, the more I read the story in the later chapters, the angrier I got at what was happening in the story.There are depictions of sex in this book but they are of straight sex, so if you are a 100% gay man (like myself) they won't really do much for you and are few in number, I think there are about 4 sex scenes in this 350+ page book. Also the scenes are pretty plain/short and don't have much detail to them so don't bother even getting the book for that, as you can find more fulfilling scenes in any of the stories that you can find on this site or the rest of the internet for free.
Overall I think this story is a skip if you are looking for a decent muscle fetish book. Try this story from Hugh Michleson if you want something steamier and not quite as fucked up.
Sorry for the vagueness of the review but I was trying to do it without giving away spoilers for those who might still want to read the book.