In the video shown below, it is demonstrated what a bit does to the horse and why he constantly opens his mouth( hint: to avoid contact pain) As soon as the horses feel the threat of a bit on their pallets while they are being ridden, they tend to adopt avoidance habits. Some of the most common habits they develop are to place the tongue over the bit, grabbing the bit, becoming fidgety, opening their mouths wider, or placing their chins on their chests.
Of course, some riders choose to ignore this terrible fact and in response to these behaviors, they don’t change their own habits and acknowledge that they are wrong but simply decide to use stronger bits or devices that make it hard for a horse to relieve its pain and ever harder for them to function properly.
If you make the difficult decision to ride with a bit, it is very important to comprehend that a bit, no matter how “soft” may look, is still an unsuitable object being put in a horse’s mouth and some horses may handle a bit better or worse than others. Many horse owners believe that when it is used properly, a bit causes no pain for the horse.
The video below shows various examples that in almost every occasion, horses are hurt by using a bit. This may happen because the riders are beginners who have not been properly trained to use the bit. A horse owner made a comment about bits, who sums up our opinion about them: Nothing says “I love my horse” more than putting metal in their mouths.
https://youtu.be/gi57PsjIFqM