The subtlities of the False-Leg Stance

The subtleties of the Horse-Riding Stance, the Bow-Arrow Stance and the False-Leg Stance are explained. Having the upper leg, the knee, the lower leg and the foot in proper alignment, for example, is important, failing which may result in hip, knee or ankle injuries. Body upright in the False-Leg Stance does not mean the body is perpendicular but slanting forward slightly. Do you know why? Also do you know why it is important to enjoy a chi flow after stance training?