It would seem what difficult is in run – the same walking, it is only necessary to move with legs quicker. And this opinion is quite misleading. At run other muscles work absolutely, other joints are loaded, there are just unique biochemical processes in an organism. Exactly thanks to the fact that "run is not fast, and not really fast walking" millions of people in the world (according to some information – 100 million people) are inveterate fans of jogs.
The Indian philosophy has many admirers worldwide. One of its main doctrines is the doctrine about a prana – vital energy. Followers of this philosophy claim that the prana is so powerful substance that she is capable to feed the person and to support in him life. That is, the person can refuse in general food, sating himself exclusively with energy of a prana.