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Control over the mind is achieved by regular and systematic practice, so that one is able to handle the involuntary processes of the body, brain and mind. This means that one is now the master of oneself and one's destiny. At the physical level, the high pressure and stimulation exerted on the nervous system during the practices of pranayama cause the consciousness to be internalized, so that super-sensory perceptions become possible. Once the physical structure is changed, the mental substance automatically undergoes a change.
At the pranic level, the awakening of prana shakti becomes a bridge to cross over from the gross to subtle experience of yoga. Planes of consciousness that had previously remained in darkness are illumined as prana flows into them. The practitioner is able to penetrate these higher dimensions of existence experientially. The anahad nada, subtle inner sounds, are heard distinctly and the mind evaporates at this time. The practitioner of pranayama does not have to fight with the wild and untamed mind; it becomes calm and controlled by itself.
As prana circulates into the dark areas of the brain and mind, one's evolution is catalyzed and a higher intelligence manifests. The kundalini is awakened and the practitioner does not need to learn meditation. The meditative state arises by itself, and a new realm of consciousness opens. One is born into a radiant area of experience; such is the great science of pranayama.
Changes in the relationship with gravity
The classical yogic texts state that by concentrating on the tip of the nose during kumbhaka, one will control prana. By concentrating on the navel during kumbhaka, all diseases will be cured. If one concentrates on the toe of the foot, one will attain lightness of the body. When the yogi can perform kumbhaka for three hours, he will be able to balance himself on his thumb. This last statement relates to the fact that one's relationship with gravity changes by the practice of pranayama. One may not realize this, but it can be measured by scientific instruments.
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