The process of awakening the Kundalini is called Self-Realization. We can connect with our spirit and achieve meditation when the motherly, spiritual energy known as Kundalini becomes awakened and active. When this energy is flowing within us, it provides an expression for the Spirit.
The dormant Kundalini energy rises from the sacrum through the spinal column. As a result, the energy centers or chakras become energized or nourished. When this energy passes through the brain we spontaneously achieve meditation.
http://www.sahajayoga.org.in/OnlineSelfRealisation.asp
--Shri Mataji Nirmala Devi
http://www.sahajayoga.org.in/ShriMatajiIntro.asp
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Love,
Shahid.