In one women's forum, the answer to the question "How to learn a rider's position"

Movements backward and forward at an angle of 80% to the horizon line, 65 cycles per minute, when passing the lower third of the amplitude of movement of the body, periodic accentuated movement of the pelvis forward in the horizontal plane is necessary, the muscles of the hip are relaxed, the muscles of the inner surface of the hip are occasionally shortened by pulse, the upper limbs in a free foothold.