There was a medieval French saying to the effect of 'if they are not an expert rider by puberty, they can never be a knight'.
The performers looked like ill-dressed scrawny young adults, male and female. All well shorter than the typical person of northern European background. They were riding equally scrawny looking ponies in an arena about the size of a hockey rink. The kids did stuff like ride standing on the pony as it galloped around the field, then would flip to be sideways on the horse, with the body of the pony completely blocking them from one side. They'd fire arrows at full gallop, hiting tiny targets as they would abruptly change direction.
That's when my understanding of Atilla the Hun and Ghenghis Khan went beyond what I'd read in books.
It sounds funny at first, but would honestly be nightmare fuel. It would probably feel like an unstoppable, inhuman force.
There was a common saying: Lord, save us from the arrows of the Hungarians
Source: https://en.m.wikipedia.org/wiki/Bulcs%C3%BA_(chieftain)#:~:t....
Highly recommend it for this specific reason and as a great historical book in general.