In The Ninja Defense, the classic art of the ninja is updated for maximum effectiveness in modern day situations. Stephen K. Hayes has distilled and refined the knowledge he has built studying and teaching ninjutsu for decades into a comprehensive self-defense system that can defuse the worst situations the modern world has to offer. With his revised take on the classical ninja martial arts, the author provides his readers with all the key ingredients-both physical and mental-to emerge safely from unexpected danger.