A Quarter horse named Mo is running in a giant circle around the arena. Seth is wearing a black and red spandex bodysuit. When he gets the “go” from his trainer he doesn’t hesitate. He runs from the center of the circle and leaps onto the horse’s back.

What happens next looks like an Olympic pommel horse routine. This is horse vaulting. It’s sort of like dance-meets-gymnastics on the back of a moving horse.

Vaulting draws its roots from ancient Greece and probably Asia too. Now, there are local clubs and national and world competitions. But Seth isn’t doing it to get a fancy ribbon.

“It’s about like, learning,” he says.