"Infighting Secrets!" is a, study of how to make techniques found in judo, aikido, jujitsu and some other forms, workable in close quarter combat situations, which is Tejitsu's specialty. If you have been around the martial arts very long, you already know that you will most likely be trying to use your skills in a situation where you have no room to manuever. If you would like to learn how to use a tight situation to your own advantage, you'll want to get this book.