Shitala means cool. Kumbhaka means breath.
a) Sit in lotus, half lotus or on a chair with legs separately mounted on the floor.
b) Extend and curl the tongue with its sides facing up. If you cannot curl your tongue, touch the tip of your tongue to the roof of your mouth.
c) Inhale through the mouth, exhale through the nose. Repeat for 5 - 10 minutes.
d) Variations include breathing with a humming sound or hissing sound