This practice is also known as Bandhu Dya Kriya. Bandhu means sibling or comrade. Dya means kindness, and kriya means action.
In this meditation, the breath - the prana - is controlled by eight rhythmic strokes and is projected out as sound. This meditation can help to expand your energy, project your aura, and connect you with your excellence. It is said that this meditation gives you the ability to rise above time and space.
Anything which deals with prana is related to the Pranpathi, the one who gives you prana, which sustains your life. This meditation should be practiced with reverence and devotion.