Om or Aum is a mantra that is often chanted at the beginning and end of yoga sessions. Om is both a sound and a symbol rich in religious meaning and depth. It is said to be both the sound of the creation of the universe, and the sound of silence. It represents both the highest level of divinity and the path to enlightenment. Om is often used as a yogic chant to calm the mind, create a peaceful setting or achieve a higher level of consciousness.