In yoga Om is often chanted and you may have heard about Om, or Aum. There is also alot of symbolic meaning within the Om symbol as well. The meaning of Om can also be found in the Mandukya Upanishad which is one of the key yogic texts.
I just came accross an online version of the Manukya upanishad and whats more you can download it as a PDF too, for free. Many thanks indeed to Swami Krishnananda. The link is just below;
I hope you enjoy reading about Om and the four states of consciousness.
Posted in About Yoga