"If you want to find the secrets of the universe, think in terms of energy, frequency and vibration." Nikola Telsa
Everything in nature is pulsating and vibrating, you, the ocean, the mountains, nothing stands still. Interestingly enough Paranva, OM or AUM the sound when chanted vibrates at the same frequency found through out nature. OM literally is the basic sound of the earth or it is even thought of as the sound of the universe. By chanting OM and at the beginning of your practice you are symbolically as well as physically tuning into nature and by chanting OM there is an affect on the body, the vibration slows down your nervous system and actually calms the mind. Another reason we chant OM at the beginning and end of the practice is to define a transition from daily life declaring this is a time for yourself.