He talking about the Pranava OM! "Aum (also Om) is a mystical or sacred syllable in the Hindu, Jain and Buddhist religions. It is placed at the beginning of most Hindu texts as a sacred exclamation to be uttered at the beginning and end of a reading of the Vedas or previously to any prayer or mantra and also is said in the beginning of any puja (religious ritual). The Mandukya Upanishad is entirely devoted to the explanation of the syllable." Source Wiki.
MMY is so intent in presenting TM in the light of Science he has actually distanced himself from using the word OM. He likes to teach Yoga in his own way, and that's OK, but don't kid yourself he's not teaching anything new! Most people will figure out, sooner or later, he's basically teaching contemporary Hinduism. I don't have a problem with that, my issue is with just, plain honesty!
