Side reins can be used to help the horse lift the shoulders. It is important to understand, our goal is to teach the horse to carry their own shoulders using their back and not rely on the riders hand. It is very important we never use the side rein to shorten or force the neck, only to provide a channel for the horse to follow.
In this video, they are used to create lift of the outside shoulder.
To see the full clip: [ Ссылка ]
