Interesting topic Chris only just seen the thread. We are told the 1st 3" of any movement relates to the Technique and Speed of the whole, as the practice of Bit Part Whole thing that we came across in the 60s. I think we have moved on a bit from then. Been playing around with a few things over the years, keep coming back to two things for speed as regards reflex action. They are Elbows and Heels wonderfull receptors of Feel .