Shitali (cooling the system) - It cools down the whole body including the nervous system. It will have a pacifying and relieving effect for various troubles such as headache, fever etc. It activates the liver and spleen, improves digestion and relieves thirst. Shitali pranayama is highly suggested as an immediate remedy for nervousness. (Do not practice more than ten rounds at a time. For the ones practising Shitali for the first time, might get sore throat or cold, in such a case it is better to discontinue practice.)