Firstly, sit in an agreeable thoughtful position. You can sit in Lotus Pose (Padmasana), Siddhasana, Swastikasana (Auspicious Pose), Sukhasana, Vajrasana or you can sit on a seat too.
Then keep your spine raises and adjusted in the head’s position. Put your hands on your thighs in Gyan Mudra.
Take a profound breath in through your nose, till your stomach gets loaded up with air totally.
At that point gradually breathe out the breath from your nose in a moderate way. With the exhalation serenade the word ‘OM‘.
While reciting the OM sound of O should be longer than M.
Your sound should be discernible to you and focus should just be on your breath.