By filling the air with force, making noise like Bhringi (wasp), and expelling it slowly, making noise in the same way; this practice causes a sort of ecstasy in the minds of Yogindras (Hatha Pradipika 2:68).
The sound produced is a nasal sound caused by the vibrations of the soft palate. Rechaka is prolonged as usual the double of time of puraka. Many people produce “ma” like that of aum, they close the ears with the thumbs and put above the nostrils the little fingers, this helps them to concentrate and be able to feel the vibrations of the sound at the spine or in the forehead.
This pranayama can be practiced with (the 5 fingers are positioned over the 5 senses) or without sanmukhi mudra, in the second case is indicated for insomnia and constipation cause it generates a vibration at a cellular level.







