Repetitive sounds have a tendency to repress flighty thoughts. The vibratory nature of silent chants helps clear the mind of negative debris. Consider the tri-syllabic sound OM - pronounced aum, the combined length of this sound is a+u=m (the combined strength on the other hand, is infinite). The first sound or syllable a is generated from the lower abdomen; second syllable u emanates from the thoracic region; while the final m sound reverberates within the skull area, thereby completing the cosmic cycle within all of us. Most of all, OM is not a word - it is an invocation to the divine forces that surround us, a celebration of human existence, and an acknowledgement of our own humility.