Fran I do assume, its 50 years of experiance that tells me Im right. Its a simple formula of feel response from the head [oral] to the thing 1" above the arse your centre of gravity the coxxys, through to the feet, which are sensative for a reason. Worked with 3 Karate world champions, they loved the idea which improved there Footwork in rapid time. As do many very good fighters who are sent to me for tweaking technique, from all over the place. Fighters for sure can aqiure good foot technique by using lines and circles or any other formula. Using elatic rubber Ive found it quickens the process and understanding of the fundamentles of Feel, which I find misunderstood by many, your primary sense of do, of the neuromuscular systems response. Anyway 38 Titles including 4 world tells me theres something to it