Sankh Dhouti or Shankha Prakshalan : The shape of our intestines is like a conch shell. Purification of the conch shell shaped intestine is called sankha purification or varisar action. This process is capable of curing very serious and chronic disease. There is hardly and disease including stomach problems, obesity, piles, hypertension, diabetes, and diseases related to tissue elements, which cannot be benefited by undertaking this activity. It has been found in Yoga camps that half of the benefits are achieved due to the other yogasanas and activities and the remaining half benefit is achieved due to this process. We clean our clothes everyday. If we do not wash our clothes even for one day the get dirty. Our abdomen contains around 32 feet long intestines, which are never cleaned even once in our lifetime. As a result, a subtle layer of toxic and contaminated matter accumulates on its inner walls. Due to the formation of this dirty layer, absorption and secretion of juices does not take place properly, resulting in dyspepsia, indigestion, acidic belches, etc.