Make a “U” shape with the thumb and index finger of the right hand. Close off the right nostril with the thrumbtip and create the following patten:
Inhale through the left nostril — hold the breath in
Exhale through the right nostril (as you release the thumb and block the left nostril with the right index finger.
Inhale through the right nostril — hold the breath in
Exhale through the left nostril.