Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A great book

Paul Vunak wrote a great book on street fights, the one the real man has to deal with, not the... "all hits banned" he may find on a dojo mat.When you're on the street you simply have to do one thing: NOT GET HURT, and you may do this only having developed your "killing" istinct, i.e. that state of mind in which you've reprogrammed your istinct not to be a bunny-hearted loser but a fierce fighter, a 21st century warrior.Vunak, coming from his vast experience with SEALs and martial arts helps the reader to handle tough situations reacting well. As a self defense instructor I found that all the principles shown in this book are the real ones you use in a real fight, so I suggest all people, both unexperienced and skilled martial artist as well as women, to deeply read and understand and so APPLY those principles, if they don't want to hardly and painfully discover that real fights are mayhems and you can get badly hurt unless you fight for life.