The brain and the vital inner organs get most of the energy to sustain their healthy function. This leads to the drying out of our essential fluids, nutrients and tissues, including the Ojas. Yoga is one of the many disciplines which teaches us the various techniques of slowing down the depletion of our vital tissues.
Consciousness emanates from conception which is a product of sex. When the subtle fire of the Kundalini finally reaches the central nervous system, something so profound happens. An intense energetic phenomenon occurs inside the brain. Many sexual orgasms never come close. The sexual energy, which, at first, is very pleasurable implodes inside.