In America they have done an experiment: one very powerful man – an athletic body with tremendous energy – was told to follow a small child and imitate. Whatsoever the child does, this athlete has to do; just imitate for eight hours. Within four hours the athlete was gone, flat on the floor, because the child enjoyed it very much and he started doing many things – jumping, jogging, shouting, yelling. And the athlete has just to repeat… The child was perfectly full of energy after four hours; the athlete was gone. He said, “He will kill me. Eight hours! Finished! I cannot do anything more.” He was a great boxer, but boxing is one thing. You cannot compete with a child.
From where does the energy come? It comes from pranamay kosh. A child breathes naturally, and of course breathes more prana in, more chi in and accumulates it in his belly. The belly is the accumulating place, the reservoir. Watch a child; that is the right way to breathe. When a child breathes, his chest is completely unaffected. His belly goes up and down. He breathes as if from the belly. All children have a little belly; that belly is there because of their breathing and the reservoir of energy.