The spines design permits sideways 'snake-like' movement that serves to relieve vertebrae joint pressure and thereby promote greater 'well being'. Modern man fails to exercise this design feature, part of the reason being that stress of the mind creates body tension and rigidity. Spinal movement has been reduced to a forward and upright bending action and even in walking, the natural twisting -- sideways movement of the spine from arm, leg and upper torso momentum, is restrained by body tensions.

When we awaken or feel tired, we raise our arms, stretch and yawn, and in the process, flex the spinal column in a twisting snake-like movement. Instantly we feel a pleasurable sensation of energy movement and alertness of mind. The reason being that in yawning, the lungs fill with air and greater oxygenation of cells occurs, pressure on the intevertebral discs momentorily releases and the autonomic nervous system is stimulated. (Do a 'yawning' stretch now to verity the value of such oxygenation and spinal twist.