Unintentional kundalini awakening on its own can become a reality only in very rare cases. Let us take the case of Lord Krishna whose kundalini awakened at a very young age may be 4 to 6 years of age. This resulted from his karma of past life.
When a seeker in search of god devotes all his time in searching cosmic truths of life contained in sacred texts of different religions of world, possibility of unintentional kundalini awakening always exists. This can happen only when a seeker worked for welfare of entire mankind all the time.
A true traveler of spiritual path never gains anything for individual self. One always worked as a trustee, a caretaker taking care of things that truly belonged to God Almighty. A trustee always indulges in karma nishkama karma way of life, offering fruits of karma performed to God Almighty.
This is also an abstract reality. As our body is manifested by spirit, soul atman within, the fruits of all karma indulged by the human form belonged to this spirit within and not the manifest physical human form. Human beings in search of God can never possess a desire or wish.
Spiritually the human form is but a medium for soul atman within to purify itself. Due to presence of ego we failed to realize our true identity as a soul atman. It is only by indulging in spirituality detailed in Bhagavad Gita we finally realized our true inner self.
In search of God from six years of age I never went after kundalini awakening. I indulged in precepts of spirituality detailed in Bhagavad Gita. I followed teachings of Lord Krishna in toto. My belief in teachings of Lord Krishna was absolute 100%. I also believed in teachings of Sri Ramakrishna Paramhansa and Maharshi Ramana.
31 years of indulgence in spirituality, in the wee hours of third of August 1993 I finally had Sakshat Darshan of God Almighty, Brahman for above two hours. In the aftermath God Almighty gave me a lengthy dictation. It was then I realized that that my kundalini had awakened fully absolutely unknown to me. I as a soul atman had reached cosmic end of life, 8.4 millionth manifestation.
In the initial stages of spiritual pursuit no matter how much I tried I could not get a spiritual preceptor to guide me in the spiritual journey of life. Slowly I realized that all enlightened ones still existed today in the vast paraphernalia of literature available in India and outside.
A believer of 100% truth from the beginning of life I immersed myself wholeheartedly into search of god. Slowly I mastered the art of contemplation (chintan) the only tool available to tread path of spirituality successfully. This is the place where most people world over erred. None wanted to follow rather indulge in contemplation (chintan).
Erroneously following path of religion (rituals) most human beings think it was end of spirituality. Religion played no role in spiritual journey. God can be reached indulging in spirituality never religion. Feigning ignorance in matters spiritual is not wise. For those of religion (rituals) shall keep rotating in endless cycles of birth and death again and again.