Jeetkunedo, Jeet Kune Do, or JKD was founded by Bruce Lee in 1967. Prior to 1967 Bruce was teaching what he called Jun Fan Gung Fu which was heavily based on Wing Chun Gung Fu. Around 1967, when the term Jeet kune do first emerged Bruce Lee was making many changes in his fighting philosophy. One major change was the dissolving of trapping which was more dominant in Jun Fan Gung Fu. Based on a simple theory, "If you have time to trap, you have time to hit". Jeet kune do has a strong foundation in western boxing and fencing unlike its predecessor. Jeet kune do is based on simplicity, directness and non-classical movement (economy of motion).