3As the ultimate warrior, the Ninja needed to be aware of danger, even while they slept. This was done by training the five senses and the most difficult to obtain, the sixth sense.By exposing themselves to danger they developed the ability to sense not only on a physical level but a spiritual one as well. In this book are simple methods to train your awareness skills to be aware of danger before it happens. This book is for those who want to train "the warrior within."