Body is divided into 7 multi-element segments: 1 head, 2 half torsos, 4 limbs.  Stance is neutral 50/50 weight distribution. Centre of mass (COM) at torso lower apex. Bow divides upper from lower. Pelvis is the saddle connecting rider above and horse below. Muscle control acts on single whole body strut, bow and string, tensegrity model.  Pull force applied to bow-string control, COM and weight shifting, in movement direction.  Balance is  COM inside the base of support which are the feet.