Have you ever walked by a yoga class and heard a group of people humming? Well, they were most likely saying OM or AUM. In yoga, the sound of AUM + the silence that follows represents the four states of human consciousness. The four states of consciousness, as determined by the Mandukya Upanishad, are waking, dreaming, deep sleep, and enlightenment or bliss. Each of these states — reflected by the …
