Nauli

Nauli is one of the kriyas or shatkarmas, preliminary purifications, used in 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.

[2][1] It is performed standing with the feet apart and the knees bent.

[3] The 15th century Hatha Yoga Pradipika claims that Nauli (magically) removes all diseases.

[1] Nauli is an exercise of classical hatha yoga;[1] it is not often taught in yoga as exercise.