A disease-free system should be the starting ground for yogasanas and pranayama. There are six specific cleansing techniques, known as Shat Kriyas, which eliminate impurities and help cure many ailments.

This is a process of cleansing the interior of the stomach. Drink four to six glasses of tepid water, with a little salt added to it, early in the morning on an empty stomach. Then stand up, bend forward, insert the middle and index fingers of the right hand into the mouth until they touch the uvulva. Tickle it until you feel a vomiting sensation. The saline water thus ejected will bring up bile and other toxic matter with it. Repeat the process till all the water is vomited out.

This should be done once a week or as and when necessary.

It is beneficial for cleansing the stomach in cases of excessive bile, constipation, and gastric troubles.

Persons suffering from hyperacidity should perform kunjal with unsalted water.

It gives relief from headaches, nervous weakness, chronic cold, cough and asthma.

It should not be practised by those suffering from high blood pressure, ulcers and heart trouble.