I have been reading about Kundalini yoga and have realized that though people consider the Kundilini arousal state to be the consequence of spiritual enlightenment, the after-effects of this arousal have surreal outcomes which cannot be explained by Physiologists. So my question is, in the history, what was believed to be the outcome of this yoga?
When I searched about this in the net, the only abstract answer to this question I got was, "It causes spiritual enlightenment". More than finding information on the good side of this yoga's outcome, I find information on the bad side of this yoga, and also suggestions on what must be done if someone experiences this state.
But my question is, what was believed to be the goal motive for yogis in the past in performing this yoga, and what is the actual necessity of this yoga? Why would anyone want to do a yoga that has a bunch of negative effects but not a single clear positive effect? I want to know what the Hindu books have got to say about this.