It’s not that they have more energy. They just don’t conserve energy like adults do. Just like a juvenile snake will put all of its venom in one bite children use up all of their energy and then collapse in exhaustion.
We like to walk to get breakfast on weekend mornings, it's about 8 blocks away. My 3yo tears out the door at full speed and runs circles around everyone for the first two blocks. Then for the next 6 blocks she drags her feet, asking us to carry her because she's too tired. We end up either carrying her a bit or stopping every block to take a long rest break.
Unleashtheducks t1_jaf1js7 wrote
It’s not that they have more energy. They just don’t conserve energy like adults do. Just like a juvenile snake will put all of its venom in one bite children use up all of their energy and then collapse in exhaustion.