Jeet Kune Do originated in 1967. After filming one season of "The Green Hornet", Lee found himself out of work and opened The Jun Fan Gung Fu Institute. The controversial match with Wong Jack Man influenced Lee's philosophy about martial arts. Lee concluded that the fight had lasted too long and that he had failed to live up to his potential using his Wing Chun techniques. He took the view that traditional martial arts techniques were too rigid and formalized to be practical in scenarios of chaotic street fighting. Lee decided to develop a system with an emphasis on "practicality, flexibility, speed, and efficiency". He started to use different methods of training such as weight training for strength, running for endurance, stretching for flexibility, and many others which he constantly adapted, including fencing and basic boxing techniques. Lee was influenced by heavyweight boxing champion Muhammad Ali, whose footwork he studied and incorporated into his own style.