The result of this branch of Yoga is to make men live long; health is the chief idea, the one goal of the Hatha-Yogi. He is determined not to fall sick, and he never does. He lives long; a hundred years is nothing to him; he is quite young and fresh when he is 150, without one hair turned grey. But that is all. A banyan tree lives sometimes 5000 years, but it is a banyan tree and nothing more. So, if a man lives long, he is only a healthy animal. One or two ordinary lessons of the Hatha-Yogis are very useful. For instance, some of you will find it a good thing for headaches to drink cold water through the nose as soon as you get up in the morning; the whole day your brain will be nice and cool, and you will never catch cold. It is very easy to do; put your nose into the water, draw it up through the nostrils and make a pump action in the throat.