Ok so this gets thrown around by virtually everyone. As Please Reality states you should be able to do a technique regardless of the opponents arm retracting or not.. I happen to agree however that requires training against a uke that retracts his arm. A thread regarding the lunge punch can be found here http://www.martialartsplanet.com/forums/showthread.php?t=54401 Its pointless to ask if any videos exist showing such training as i have looked and either they don't exist or are private and not circulated publicly or on the web. Every video of Soke or the Senior( read that as Real Shihan as I have heard it put) Shihan show them using arm hanging lunge punch's when they demo kata. Since i watch them often ill point to the Koto ryu and Kukkishin ryu dvd as well as the essence of budo video i see on youtube. So its not likely this is on video, but that does not mean its not being trained. So the question is, why do every single xkan video(ignoring the toshindo and akban) feature the Lunge punch with obligatory arm hanging? How is punching in kata and drilling done in the real shihans dojo in Japan? Do you regularly train against a retracting punch? If so how do you structure that training? Ill say this, i had a go at my instructors senior student full speed with a good old 1/2 with retraction(i only got off the 1/2, i intended to keep going and was actively looking to do so) and he dealt with it just fine, and i ended up with a broken rib in the process. Saw something similar with my head instructor as well.. So i know with regards to foreign instructors mine can deal just fine with real strikes. I wonder if part of the problem is nature of the attack vs the defense. When you do a punch from the typical range you see them done, when you miss thanks to his movement and/or deflection your arm can seem to hang their. I have had similar happen when i sparred in mma. My rear hand fired off and he dodged perfectly and it just seamed to keep going, the defense threw me off. If all these kata are done with the "lunge punch" the arm hanging phenomena will continue. The only way around i can see is if the kata were done with boxing style more realistic punch's. So clearly people in this art are able to deal with real punch's despite the lunge punch that is the mainstay of kata. So how do you guys train to deal with more modern strikes/kicks? Id be interested to hear how this issue is dealt with in Japan in the Most Senior Shihans Dojo.