To help your horse stay round and forward throughout half halts…
Imagine a swirling ball of energy going through him like an electrical circuit. The circuit begins with the rider’s driving aids (1) that create an impulse to the horse’s brain (2), which produces activity in the hind legs (3) that sends the current through the bodies of horse and rider to the horse’s mouth (4). The horse’s understanding (back to the brain) of the contact causes the energy to remain within the horse, flowing back to the hind legs, which now always act at the will of the rider’s driving aids. —Robert Dover