Place your left hand on your left knee with your palm facing up and your thumb and index finger touching.
With your right hand, you are going to alternate the opening and closing of your nostrils.
Put your thumb on your right nostril and have your ring finger ready to place over your left nostril. Breathe out gently and fully from your left nostril as you cover the right one with your thumb, and then gently breathe back in through the same (left) nostril.
Now cover your left nostril with your ring finger (always using your right hand throughout the exercise) and exhale through your right nostril fully and then inhale again through the right.
Keep alternating and repeating this sequence until your alarm goes off.
When done, simply go through the exhale on whatever side you’re on and then take a couple of normal breaths (no hand, both nostrils).
Breathe in through your nose and out through your mouth just to clear the channels and come back into the room.”
― from “The Urban Monk: Eastern Wisdom and Modern Hacks to Stop Time and Find Success, Happiness, and Peace”