Kundalini is the coiled Serpentine energy lying dormant in base of spine. If this energy is activated 100% one immediately becomes an enlightened one like Mahavira, Gautama Buddha Jesus Christ and Prophet Mohammed.
Full awakening of kundalini is not easily realized.
The sole purpose of kundalini awakening is to realize self, realize god in our lifetime. And what does realization of God truly mean?
Realizing self, realizing god means liberating self forever from cycle of birth and death. Seekers, spiritual travelers who did not want to rotate in endless cycles of birth and death indulged in full kundalini awakening. There was no other reason for realizing full kundalini awakening.
If our goal of life is spiritual, if we can easily distinguish spirituality from religion, if we desire seeing and meeting God in this very life time then kundalini awakening is for us.
If we prefer indulging in religious practices (rituals) then kundalini awakening is not meant for us. Why indulge and mar our present and future. I know many who indulged in kundalini awakening half-heartedly only to quit midway, finally becoming patients of severe depression.
In present times hordes of kundalini awakening centres existed in religious places in India and also in the west. It is for gullible public to judge right from wrong, truth from false. Everything in field of spirituality including kundalini awakening always comes from within and indulgence in contemplation (chintan) was the only path.
Even though Sri Ramakrishna Paramhansa and Maharshi Ramana did not exist in person, we could duplicate their efforts by indulging in vast paraphernalia of literature available in open market. On a spiritual note, we can always have a one-to-one dialogue with both Sri Ramakrishna Paramhansa and Maharshi Ramana by becoming 100% truthful.
All enlightened souls all the time existed in cosmos. These cosmic energies can be invoked for any clarification by a true seeker at will. From six years of age I have done it all the time and so can others.
All precepts of spirituality including kundalini awakening are best understood only when we believed in world of souls atmans. Unless we believed in doctrine of karma, doctrine of reincarnation rebirth nothing related to spirituality or kundalini awakening can become clear.