This technique gives greater benefits if you can retain your breath for extended periods of time. Those people who have been regularly practising nadi shodhana pranayama over a period of time will find this practice easy and very effective as a means to introspection. If you cannot hold your breath for a long time, we suggest that you practise the easier technique of nada yoga.
Point of awareness
Generally the awareness should be fixed at the back of the head (bindu). However, if you hear a distinct sound in any other area, such as the right ear or the middle of the head, then this is acceptable. Those who are devotionally inclined can tiy to listen to the nada in the heart region (anahata chakra).
The important thing is not so much the point of awareness, but that the awareness is fixed on progressively more subtle sounds.
This is a powerful yet simple method of revealing the mysteries of your inner being. Total absorption on the nada can lead to dhyana. One soars into the heights of the inner space. Any of the basic benefits that we have enumerated for other meditative practices can be obtained from nada yoga sadhana.
Nada yoga can be combined with many other yogic techniques. For example, it can be integrated with vajroli mudra and moola bandha. If you already know these practices then you can incorporate them at once, otherwise you can incorporate them with nada yoga when we describe them later.