Awsome freedive material
This is quite possibly the most informative freediving material I have ever read. There are lots of good exercises and information you can use to improve your freedive skills.

Informative
I like the book. it's very informative and has tons of helpful stuff. Might have too many BIG words, but it still gets the point accross. I would reccomend it for people who are new to diving/spearfishing.

Helpful Book
It's so helpful for beginner also semi-advanced freedivers. Thanks for to author. But a live excercise video cd can added the book.

i look better in a speedo than you...
great info on breathing techniques, very academic in presentation, a real snoozer at bedtime...interesting history info, lots of drawings of dudes wearing speedos helps to explain the techniques. worth it, no matter what type of diving you're into...

Informational but not necessarily a big help
This book is quite large and not quite what I was hoping for. I already knew a few exercises and techniques but found some of the extra ones in this book were awkward and proved to be a waste of time.

The book is quite touchy feely and doesn't excite you as you read. I don't know. You might enjoy it - I did learn some stuff from it, especially if you want to get right into the science of it all. Just didn't give me any improvement over my pre reading performance.