(Satkarman): The six traditional yogic purification practices. Sometimes they are also called the shatkriyas. These practices purify both the physical and subtle bodies. The six categories of cleansing action are: neti (techniques for cleansing the nostrils and air passages), dhauti (a set of practices for purifying the internal organs and systems of the body), nauli (a technique for purifying the abdominal area), basti (techniques for cleansing the lower abdomen and colon), kapalabhati (a technique for cleansing the airways), and trataka (focused gazing practices that purify the mind).