Ma Bu (Horse Stance) – The stance typically begins with the feet a shoulder-width apart. The feet are parallel, straight forward, and the knees are bent at 90 degrees. The torso sinks down as if following a plum line and the sacrum curves forward and in or arches. Equal weighting (50-50) is given to each foot, making for a very stable stance. Ma Bu is frequently used for conditioning and building up knee strength.