Studies on the energetic bodies.
The external sun and moon divide each twenty-four hours into night and day, and the internal sun and moon, i.e.; ida and pingala, are responsible for our perception of night and day; that is duality. Ida nadhi predominates at night, the parasympathetic nervous system is active, there is a greater release of melatonin hormone within the brain and the subconscious mind is active. During the daylight hours pingala predominates, the sympathetic nervous system is more active and seratonin hormone is released within the brain which brings conscious functions to the fore and the subconscious mind submerges. The two nadis, ida and pingala, and the nervous systems, pull the awareness from one extreme to the other, binding us to the duality of mundane circumstances because of the interrelationship with the external force of the sun and moon. The entire biological system is programmed to the movements of the sun and moon cycles. However, a yogi can develop control of the autonomic ner
