Firstly let me state that Guy is not big on principles. In fact, when I asked him for key principles to help understand his approach, he asked if I knew  who Descartes was and suggested I was too Cartesian. He did not know how right he was, as I start every review I do so by writing down Descartes’ four precepts! Despite Guy’s abhorrence of principles I will lay down some of the key principles I draw from studying his work so far. 1. To work a muscle or specific part of the muscle put it under tension. E.g. to work the pectineus take the hip from abduction in to adduction. 2. To length a muscle...