When you are tired of counting sheep or being afraid of the dark, it can help to know that while we sleep, at night, a whole part of the world is busy: there are those who sort parcels and those who deliver food; doctors treat in hospitals and cashiers sell in supermarkets 24 hours a day; there are those who make bread and those who return from a party; foxes, hares and owls are hunting and, at the opposite pole from your house, another child is at school, taking a swim, or watching TV!
There is a lively world out there, of which you are also a part.