It has physiologyof Shankha Prakshalana which is a yogic cleansing practice for gastrointestinal tract. Which is posted by Nirmala Institute of Yoga & Health. Shankha Prakshalana is also known as Varisar Dhauti which is a part of Shatkarma (Cleansing Practice). Shatkarma is part of Hath Yoga. This video is very much helpful for understanding mechanism of Shankha Prakshalana in terms of medern medical science.