What is rhythm in literature according to the passage?

Rhythm in literature is a more or less regular occurrence of certain elements of writing a word, a phrase, an idea, a pause, a sound, or a grammatical construction. We are also accustomed to this recurrence in the alternate heavy and light beats in music. Our love for rhythm seems to be innate : witness the response of a small child to lively music. Children love to beat on toy drums or empty boxes. They stamp their feet and chant nursery rhythms or nonsense syllables, not like primitive dancers. As children grow older, they are taught to restrain their responses to rhythm, but our love of rhythm remains. We live in rhythms: in fact we are governed by rhythms.
    Physiologically, we are rhythmical. We must eat, sleep, breathe, and play regularly to maintain good health. Emotionally we are rhythmical, too, for psychologists say that all of us feel alternate periods of being in high spirits of concentration. It naturally follows that rhythm, a fundamental aspect of our lives, must be a part of any good literary works, whether poetry or prose.