Here's 10 year old J. practicing the flag, one of the compulsory exercises in equestrian vaulting. The key in this exercise is to keep the hip down, while raising the leg. When performed correctly, the hip should be down, knee down, top of the foot facing down, pointing and lifting through the middle toe of the raised foot. The left leg should be resting solidly on the horse, with the top of the foot firmly on the horse, pushing down for stability. The body should be in a "box" position, with the elbows in.

In this exercise, the instructor is asking her to perform the flag both correctly and incorrectly. J. performs the flag incorrectly by turning the leg out, arcing the back, and lifting the foot with the top of the foot facing out.

This helps the body to learn what both the correct and incorrect positions feel like.