To iterate is to do feed back, that is to carry the exit to the entrance; iteration happens when the serpent bites its own tail, and in the body when the cold cephalic sensation that descended and was neutralized with pelvic heat returns to the head; that fertilized cold will return to the pelvis again and will be iterated many times, in an increasing and exciting SPIRAL. The figure in numeral X, the SPIRAL of the THE THIRD EYE GOING DOWN, shows that when the pelvis SPIRAL expands its pulsation (to five rings), the eye brow center SPIRAL should be increased to nine rings. And when the pelvic rings be nine the eye brow center will have to increase to thirteen. Thus, a DOWN wider pulsation will make the eye' s pulsation wider and a greater UP rings pulsation, will be ITERATED by the DOWN again. It is like rising your body by pulling your shoe strings. A greater contrast between the low tones (the heat) and acute tones (the cold) produces a greater pleasure. Those who lose awareness of this distance between low and high frequencies disconnect their head from their pelvis and interrupt the SPIRAL of expansions and contractions ending their excitation.