Children can fall asleep anywhere and anytime. Except when necessary. This is in kindergarten after lunch and at home in the evening, parents and educators would remark. In an ideal world, the evening routine of parents of young children is as follows. Brushing teeth, changing into pajamas, reading a fairy tale or singing a lullaby, a kiss on the forehead, turning off the lights and closing the door to the children's room. In the real world, the story is a little different, because we do not put a full stop here, because this is just the introduction. Many children refuse to sleep. But even children sometimes run out of energy, and not just at the end of the day. They don't mind if they eat a piece of bread, a shell or Lego blocks.