The concepts in this book can help you hit a lot harder. If you do the work, you'll make the person holding the focus mitt gasp when you hit it. You may pop an air shield or break a heavy bag in half. In self-defense (don't pick fights) you could drop your attacker to the pavement like a cold side of beef. It could save your life. Whether you're into self-defense, sparring or winning tournaments, it's good to know how to hit hard and hit fast with little effort, and how to do it while moving smoothly, maintaining your balance and exposing yourself to low risk.