My personal experience of working recently with this mantra:
The All-encompassing expression (OM)
of the flowering love (AH)
This Divine seed at the heart of me (HUM)
I sound this, standing, in one breath with the sound gradually changing (but don’t obsess about this – it should be comfortable so sound in three breaths if you wish). Starting with hands raised above the head (OM), palms together, bringing the hands down to the throat and heart (hands in western prayer position to coincide with the AH sound), then as the hands move down towards the navel from the heart, flattening out so only the fingertips touch (HUM).
Feel the intensity of this vibration, sounding the INTENT of love, joy, health, vitality, of Divine Will, to be expressed through our DNA, the matrix which shapes our reality.