Spurs are designed primarily to support the rider's leg aids. This reinforces the signal given to the horse and enables a fine and precise influence. When using the spurs on the horse's belly, the abdominal muscles of the horse tighten as a reflex, which causes the back to arch and leads to a better collection of the horse. Another effect is the increased stepping under of the hind legs, which leads to more impulsion. To ensure that spurs are used correctly, the rider should be experienced in the use of spurs, have a stable or well-balanced seat and be able to keep the leg steady against the horse. If used incorrectly, spurs can have negative consequences, in the worst case injure or deaden the horse. The motto is: "Spurs must be earned".