It is time to go to basics of Jeet Kune Do punch and introduce something modified as well.When Bruce Lee came up with JKD he studied mechanics of the human body, perfected it and implemented his knowledge in every aspect of hand to hand combat. When it comes to JKD punch also known as straight lead hand punch, Bruce utilized economy of the motion and body mechanics to create it. Shortest distance from point A to point B is a straight line and that is why this punch is so effective.
Since Bruce Lee was right handed he used his strongest side as a lead hand to punch and advised that others do the same. Since I'm right handed and for the purpose of this tutorial I will talk about the south paw stance. Other reasons for using your right hand is because it is closest to your target, it requires less time to reach it, it is more accurate then your cross and in Jeet Kune Do we use straight punch 90% of the time to attack. With the proper body mechanics such as relaxation which brings speed, weight shift to front leg before punch lands, turn of your feet and hip will increase the power produced by the straight punch. Look at the image above to see which areas of your knuckles to use while executing the punch. Notice that only first 3 knuckles are used while executing Jeet Kune Do straight Punch. Those are your strongest knuckles in your fist and by properly executing this punch, it eliminates the chance of injuring your hand.
Many people will dispute that traditional punch is a lot stronger then palm heel because you use your knuckles. However, this statement is not true. It is not the knuckle that causes the damage, knocks someone out and so forth, it is the proper body mechanics that lead to creating power punching. To prove my point check out this video. Guy gets knocked out while playing slapping game. http://www.youtube.com/watch?v=dvHZTrwVKEY They were using nothing but palms, yet consequences are the same as regular punch. 'Till the next time, have a great day.