As man generally neglects to think of this breath, he overlooks the fact that his health entirely depends on rhythmic breath. Rhythm is the central theme of the whole creation. Therefore the infant moves his hands and legs by turns, forming a rhythm. This shows that nobody teaches anyone rhythm; it is natural to all beings. It is rhythmic movement which enables the fish to swim and the serpent to climb trees. If rhythm were not an instinct the animal would never have known how to walk, nor the bird how to fly.