Instruct: Classify the given review into positive or negative sentiment.
Query: Save your money...

I bought this book out of curiosity, against my common sense.I've been a martial artist for over 10 years and was interested to see what this new workout had to offer. After reading it I realized that what this book has to offer is very little. As novel a concept as it appears to be, this book was a waste of money, time, and publishing. There is nothing offered by this book that is unique or even worthwhile.Perhaps the actual classes have more to offer, in person amongst other people, I'm sure it is more interesting. However if you're trying to learn anything or gain anything from this book, look elsewhere.