What is Kundalini? Kundalini is an inner energy dormant at
our coccyx; it has a great power and influence over ourselves.
In other words, Kundalini is not only a spiritual energy,
but a physical energy as well.
What happens, then, if Kundalini wakes up from its sleep?
It goes up the spiritual channel or path called Sushumna,
which runs along our spinal column, to the Sahasrara Chakra
in the crown of our head, penetrating the seven main chakras,
or spiritual centers on its ascent.
From Tathagata Abhidhamma Book 1