of impact. In his first fight science appearance, the technicians surmised that this release was the only way to explain why his fist didn't explode from the 12000 psi force he generated. (the boxer generated 2000 psi). Then when he applied Fa Jing, the sensors and computer shorted out. They brought him back for more tests on this upcoming Fight Science so watch for it! ... Glen Levy Eric Chen hammer fist hammerfist fa jing fight science Joe Perez ninjoe ninjoeperez impactstunts usawushu ...