How many times have you heard of a horse exploding in a huge reaction “out of nowhere”? It can happen anytime: a horse out on a ride suddenly bucking, in the crossties pulling back and snapping the halter, or panicking and scrambling in the trailer.
These techniques work with the horse to encourage his inherent curiosity and help him stay calm and present, thinking through a challenge rather than rushing through fearfully. The best part is once a horse has had a few positive experiences of working through a new situation with your assistance, he will be more likely to trust you as he is presented with the next one.
Many people have been instructed to correct biting or fidgeting by shanking on the halter, or smacking the horse in the neck with a loud “no”. It has not been my experience that this works to stop the behavior, instead becoming more of a cyclical action/reaction that repeats daily while the horse is handled.