Proceeding beyond the pituitary supposes that the tongue infiltrates into the nasal fossae. Two trajectories are then possible: to the right or to the left. Technically, this nasal infiltration prevents the air from coming in through said nostril. This gives a new perspective to the practice of nadi sodhana, alternate nostril breathing. This also sheds new light on the functioning of ida & pingala nadis.
In this paper, I discuss the progress made in Khecari Mudra since I wrote the khecari booklet three years ago.