BITW brand of Effective Self Defense is a practical fighting art which is strongly influenced by Professor Tommy Gilbert’s background in Kajukenbo Fi kuen. Effective Self Defense is in a constant state of evolution.

Kajukenbo is the first mixed martial art in North America dating back to 1947. The original founders of this style are: Peter Choo, Frank Ordonez, Joe Holck, Clarence Chang, Sijo Adriano d. Emperado. Kajukenbo is a unique blend of the following martial arts: Karate, Judo, Ju Jitsu, kenpo, and Chinese boxing.

Kajukenbo Fi Kuen was created by the legendary Grand Master Ted Sotelo. Fi Kuen is “way of the rapid fist."