Stand about three feet behind a chair with the back toward you, arms outstretched. Kick moderately high over the back of the chair in a circular fashion, first with one foot, then with the other, but be sure to keep the body perfectly erect and the foot on the floor straight. You can also practice the squat first, with one foot and then the other; but that is more for the advanced pupil. After you have mastered the plain squat thoroughly, practice this one leg squat. It will give twice as much work to the muscles of the thighs and calves as the plain squat.