Nauli Kriya Breathing. Nauli is one of the Kriyas or Shatkarma (cleaning exercises) from Yoga. The exercise is claimed to serve the cleaning of the abdominal region- digestive organs, small intestine and is based on a massage of the internal belly organs by a circular movement of the abdominal muscles. The Hatha Yoga Pradipika states that Nauli stimulates the digestive fire, thereby removing toxins, indigestion, and constipation. It is considered a Shat Karma, which is an internal cleansing to a