A bitting rig will improve head carriage and sidechecks will help bring a horse's nose down. You may wish to exercise a stabled horse this way when you cannot ride. Horses can be trotted across cavalettis or fence posts to regulate length of stride. This is particularly useful in jumping horses and in young horses that do not extend enough in the trot. Gaited horses with a pacing tendency can often be improved by this procedure, as can Western horses that need more length of stride in their extended trots.
Some horses jump well on longe lines.
It is good exercise for trained horses and a good way to start young jumping prospects. Since jumping is demanding, don't overdo it. Longeing is an important step in preliminary training. A young horse can learn to start, stop, stand, walk, trot and canter on command. It establishes authority and routines that reduce mounted training time.