Confinement, or restriction of movement of any kind, is contrary to the horse's nature - after all, he is a creature who is used to running free, moving at will and who equates restriction of any kind to danger.
And the kids are wonderful little riders! Way cute!
Aren't they terrific? Great example of why the EU riders wind up so good later in life. What do you think average age is of these kiddos? I'm guessing 8 or 9.