Gracie Jiu-Jitsu isn't merely a martial art confined by a limited number of techniques, but rather an all encompassing system of survival guided by a collection of timeless combat principles; the most important of which is that of energy efficiency. This concept of maximum effectiveness with minimal effort is what enable Grand Master Helio Gracie to modify and adapt the original Japanese Jiu-Jitsu techniques until they were effective against giants, and it is also the core concept when dealing w