This manual presents a "map" of riding and explains its basic biomechanical principles. Mary Wanless asserts that behind the art of riding lies a science, which has laws of cause and effect. Utilizing these laws turns the rider's body into a sophisticated tool for influencing the horse, allowing her to mimic the techniques which talented riders use unknowingly. There are vignettes which tell stories of riders she has taught world-wide, from relative novices to international competitors. Chapters on learning, sports psychology, dismounted exercises and bodywork expand the ideas put forward in "Ride With Your Mind" and "Masterclass".