When a horse rears around people, in most cases, it is considered a dangerous habit for riding horses, as not only can a rider fall off from a substantial height, but also because it is possible for the animal to fall over backwards, which could cause injuries or death to both horse and rider. It is therefore strongly discouraged. A horse that has a habit of rearing generally requires extensive retraining by an experienced horse trainer, and if the habit cannot be corrected, may be deemed too dangerous to ride.