My dad once told me a crazy story. He grew up in Fiji, had seven brothers and sisters and they would ride a horse to school every day. Well, some of them rode the horse. I suppose not all of them.
While doing research into imagery of children on horses, I found out about the Mongolian festival Naadam, which includes children's horse racing. Children from age 6-13 train as jockeys for months before the festival, then take part in a race that is 15-30km long, depending on their age (the horses' ages, not the child's). The children sing to the horses as they ride.
Quite a contrast between my dad and his siblings riding to school and a Mongolian child on a marathon race through the desert. But then again, children will always be children and horses will always be horses.