Sit in any comfortable meditation pose, preferably padmasana or siddha/siddha yoni asana, with the head and spine erect and the hands in chin or jnana mudra.
Relax the whole body and close the eyes. Fold the tongue upward and backward so that the lower surface lies in contact with the upper palate of the mouth.
Stretch the tip of the tongue backward as much as it is comfortable. Do not strain and perform ujjayi pranayama then breathe slowly and deeply.
Hold for as long as you can relax it and then repeat the practice.
Cautions and Limitations
Stop doing this mudra for the day if a bitter secretion is tasted, such a secretion is a sign of toxins in the system.
Contraindications
Don't do this practice if you have tongue ulcers and other common mouth ailments.
General Benefits
Khechari mudra stimulates a number of pressure points located in the back of the mouth and the nasal cavity.
These points influence the whole body. A number of glands are also massaged, stimulating the secretion of certain hormones and of saliva.
This practice reduces the sensations of hunger and thirst, and induces a state of inner calm and stillness.
It preserves the vitality of the body and is especially beneficial for inner healing.