Actually this is very true. Not only the single lethal hit but also stuff something similar to the Kill Bill exploding heart punch. The art of pressure point strikes is called kyosho-jutsu, there is an excellent book on the subject by some asian martial artists who experimented on POW's to come up with the tricks. "Anatomy of life and death". Tons of youtube videos. It is a combination of knowing where to hit and at what angle, as well as how to throw the punch. Punches can be thrown in two stages by experienced martial artists which snap the pressure into a single spot aimed at vital organs or nerve centers. Finger type punches are often used in these techniques and practitioners not only develop the muscles required but often hit boards so hard their finger forms micro-fractures which bond together strong than before. The multiple stage pressure point combos are very real. My favorite involves a kick to the side of the foot and then a light snap punch to the nerve in the jaw. You could do it with 2 fingers if you are good enough. Apparently the first pressure point can "activate" other points or just cause a cumulative effect on nerve overload with multiple hits. loscoy321: you ever train the one or three inch punch with your master? Id be interested in trading techniques.