Communication to control the horse when you are riding is relayed by using your hands (rein aids), seat, legs, and voice. Most people place headgear (bridle) on the horse’s head with a bit in the horse’s mouth, and a saddle on the horse’s back. The bridle with a bit will apply pressure on and around the horse’s head and mouth in a variety of places, depending on the type used. The horse learns that pressure in a certain area means to slow down, stop, turn or change their head position.