There are six Hatha yoga methods which yogis used for the purification of the body:

Dhauti, Basti, Neti, Nauli, Tratak and Kapalbhati.

Some of these purification techniques can be run every day and some of them on a periodic basis. What is important is to learn them from experienced teachers. Yogis say that only one month performance of these practices daily in combination with healthy eating: "If you are 70 years you will look as if you are 40!"

1. Dhauti

There are two types of Dhauti, one for external purification, and the other for internal. Here we will only roughly describe the methods that are not to run alone without you to learn from a competent person.

Take a fine piece of muslin cloth, 3 inches wide and 15 feet long. The borders should be stitched well and no pieces of loose thread should be hanging from its sides. Wash it with soap before use and make it clean. Dip it in tepid water. Squeeze out the water and swallow one end of it little by little. On the first day swallow only one foot. Keep it there for a few seconds and then take it out very slowly. On the next day swallow a little more and keep it for a few minutes and then take it out slowly. Thus little by little you can swallow the whole length, retain it for about 5 minutes and then take it out. Do not be hasty. This is an excellent exercise for those who are of a flabby and phlegmatic constitution. Gradual steady practice cures gastritis, dyspepsia, diseases of the stomach and spleen, disorder of phlegm and bile.

2. Basti

Basti exercise is intended to serve the purpose of enema to pass out the accumulation of faeces from the intestinal canal. There are two varieties...

3. Neti

Neti exercise is intended for the purification of the nostrils. The nostrils must be kept always clean. Unclean nostrils will lead you to irregular breathing. Irregular breathing will make you sick.

There are two types of Neti. One is conducting thin rubber forty centimetres in length, which is easily pushed into one nostril and out through the mouth outwards, and  in such a way cleans the sinus channels and the second way is that the hot water flows into one nostril and flows through the second. After this is performed by certain breathing exercises that he is cast possible remains of water.

4. Nauli

Nauli Kriya is intended for regenerating, invigorating and stimulating the abdominal viscera and the gastro-intestinal or alimentary system. Nauli Kriya eradicates chronic constipation, dyspepsia and all other diseases of the gastro-intestinal system. The liver and pancreas are toned. The kidneys and other organs of the abdomen function properly. Nauli is a blessing to humanity. It is a sovereign specific "uni-all" or an ideal "pick-me-up".

5. Tratak

Tratak is steady gazing at a particular point or object without winking. Though this is one of the six purification exercises, it is mainly intended for developing concentration and mental focusing. By the practice of Tratak, diseases of the eyes are removed. Eye-sight improves. Many have thrown away their spectacles after taking to this practice. Will-power is developed.

6. Kapalbhati

Kapalbhati is an exercise for the purification of skull and lungs. Though this is one of the Shat-Karmas (six pacification exercises), yet it is a variety of Pranayama exercises. It cleanses the respiratory system and nasal passages. It removes spasm in bronchial tubes. Consequently Asthma is relieved and cured also in course of time. Consumption is cured by this practice. Impurities of the blood are thrown out. The circulatory and respiratory systems are toned to a considerable degree.

The mentioned methods are very poorly explained, and this information are presented only to draw readers attention to the richness and strength of yogic practices.