Partially interesting book about one middle aged man's quest to try 13 extreme sports. What's bad is that he doesn't say anything about himself, making it hard to get a correct reading on some things. He doesn't even say what his job is, which leaves you wondering what exactly is it that he does that sends him on works trips around the world and still leaves enough time to wander off and do crazy things while there.

It's also possible he is crazy, or very stupid, himself; certainly his escapades in scuba diving are cringe-worthy, and his diving partners should be ashamed of themselves for letting him dive totally unprepared. For that matter, how exactly is a deep air dive in some cave going to help him to prepare for tri-mix diving in the ocean? I fail to see the connection.

Another thing is the, not unique to this book, need to make all the characters larger than life. From personal experience, I can say that there are plenty of people doing some variant of "extreme" sports professionally (usually for very little money) for no other reason than that it's the only thing that they know how to do, or they were bored in their normal job.