Kundalini spirit, the dormant cosmic energy all the time existed in the base of spine. It can be activated by indulging in spirituality as explained detailed in Bhagavad Gita and also Upanishads (independent spiritual treatises). Full activation of kundalini shakti leads human beings towards state of enlightenment, becoming an enlightened one forever!
Normal human beings used their brain 1 to 2%, the balance always lying dormant. By activation of kundalini spirit in stages human beings activated different chakras situated in the spine. These chakras are energy centres activation of which results in human beings manifesting higher levels of consciousness. So much so that full activation of kundalini results in opening of Sahasra Pushpa (thousand petalled Lotus) existing in brain behind forehead! One immediately becomes an enlightened one, a bodhi, a Jina a Mahavira forever.
Kundalini spirit directly relates to practice of celibacy. The activation of kundalini becomes possible when human beings indulged in practice of celibacy and absolute celibacy. Celibacy (abstention from sexual indulgence) relates to physical aspect of celibacy. 90% celibacy is always practiced mentally. Eradicating flow of negative thoughts to our brain in totality is what absolute celibacy all about. Indulging in requisite karma when human beings practiced absolute celibacy, our kundalini awakened in stages finally reaching Ajna chakra.
The whole purpose of human life is our kundalini reaching Ajna chakra so that Sahasra Pushpa could be activated. A soul atman, the spirit reaches state of absolute purity the moment human beings gained enlightenment. For a pure soul atman the need for manifesting a new body ceases to exist finally putting a full stop to endless cycle of birth and death. A pure soul atman after human beings left mortal frame merges with Brahman (God Almighty) forever.
Activation of kundalini spirit demands our indulgence in celibacy there was no other shortcut.