While comfortably seated, fold the index and middle fingers of your right hand back onto your palm. Breathe through both nostrils. With your right ring finger, close your left nostril. Inhale through your right nostril. Pause. Close your right nostril with your thumb and breathe out through your left nostril. Pause. Inhale through your left nostril. Pause. Close your left nostril with your ring finger and breathe out through your right. Continue in this manner: inhaling through the nostril you just breathed out of, adding a slight pause at the top and the bottom of the breath. After 10 rounds, remove your hand and feel the cool ease, when stagnation is released, of breathing through both nostrils.
See also Alternate Nostril Breathing to Help you Sleep