In this exercise all depends upon keeping the knee joints perfectly straight, and the head, in the bending-down movement, as much as possible between the arms.
The object of the practice is to give suppleness to the waist, freedom to the knee joint by well suppling the ligaments at the back of the knee, and at the same time to expand the chest. For these purposes, if carefully and judiciously carried out, it is most effective, calling alternately upon every portion of the frame wherein suppleness is indispensable to easy and graceful riding.
Great care should be taken not to hurry this lesson, and if the pupil is of a figure that renders it difficult for her to reach her instep in bending down, it should not be insisted on; but it is necessary that she should bend the back as much as possible without bending the knees, as any yielding of the knee joint destroys the whole value of the exercise.
To perform the above named practices comfortably, the pupil should wear a loose dress which throws no constraint upon any part of the figure. Slippers, too, are better than boots, as the latter confine the foot and ankle too much for complete liberty of movement.