“When the body is born, it contains, by its nature, vata, pitta, kapha. The appropriate vayus occupy their appropriate nadis in a prescribed manner. If the flow of the vayus is not correct in the correct nadi and path, then the body becomes diseased and there is danger for life.” (Garbha Upanishad).
If one wants a cure from some disease, even supposing that there are many medicines, for the disease to be cured by these medicines, it is essential that there should be a proper flow of vayu in our bodies without any obstructions. When the vayu sancharam is proper (according to krama), then even taking medicines becomes irrelevant.
The activity known as pranayama is very important for the vayu sancharam in our body to be correct (according to krama), for the nadis to get cleaned every day, and for the blood to flow properly in the nadis. This kriya is a very important support for the vayu sancharam in the body. If pranayama is to be successful, there should not be a disproportionate measure of vata, pitta, or kapha in our body.
If vayu sancharam is not proper, if vata, pitta or kapha increase, our body begins to tremble, we develop breathlessness and bloating of the stomach. The joints of the bones and nadis will develop disease or pain without proper vayu flow and life will get gradually shortened.
In order to eliminate these sorts of bad vata, pitta, and kapha, you have to practise yogasana and you should know and practise the six kriyas related to yoga. These asanas and kriyas are explained in detail in many upanishads and yoga texts. The essence of this material from the old texts is mentioned here as well.
The kriyas are of six types:
- Dhauti Kriya,
- Basti Kriya,
- Neti Kriya
- Nauli Kriya,
- Trataka Kriya, and
- Kapalabhati Kriya.