Side reins, draw reins, and running reins are all types of training aids used in horse riding. Side reins are attached to the girth and the bit, running parallel to the horse's body, to encourage the horse to work in a consistent frame. Draw reins are attached to the girth and run through the bit rings, encouraging the horse to lower its head and flex at the poll. Running reins are similar to draw reins but are attached to the saddle and run through the bit rings, encouraging the horse to work in a round frame. These aids should be used with caution and under the guidance of a knowledgeable trainer, as they can be misused and cause harm to the horse if used incorrectly. **

Side reins are pieces of equipment used in horse training that attach from the bit of the bridle to the girth of the saddle, helping to encourage the horse to work in a round frame. They are used to promote a consistent contact between the horse's mouth and the rider's hands. Draw reins are also used in horse training and attach from the girth, run through the bit rings, and back to the rider's hands. They are used to encourage the horse to lower its head and neck, promoting a more collected frame. Both side reins and draw reins should be used with caution and under the guidance of a knowledgeable trainer to ensure they are used correctly and do not cause harm to the horse. **

Draw reins are pieces of equipment that attach to the girth of a horse's saddle and run through the bit rings, used to encourage the horse to lower its head and neck. Side reins are similar to draw reins but attach from the bit to the girth on each side of the horse, helping to encourage the horse to work in a round frame. Martingales are straps that attach to the reins and the girth or the chest of the horse, used to prevent the horse from raising its head too high or throwing it back. These tools are commonly used in training to help encourage proper head carriage and frame in the horse. **

For a K-pony, the triangle reins or running reins should typically be around 10-12 feet in total length. This length allows for enough control and communication between the rider and the pony while still giving the pony freedom of movement. It is important to adjust the reins to the appropriate length for the specific pony's size and build to ensure proper handling and comfort during riding. **

For plaited reins, a standard length of 54 inches to 60 inches is suitable. This length allows for enough control and contact with the horse while riding. It also provides enough length for the rider to make adjustments and give cues to the horse without being too long or too short. Ultimately, the length of the reins should be comfortable for the rider and allow for effective communication with the horse. **

When using a curb bit with a curb chain, it is recommended to use regular side reins rather than running reins. Regular side reins help to stabilize the bit in the horse's mouth and provide a consistent contact, which is important when using a curb bit. Running reins may not provide the same level of stability and can create uneven pressure on the bit, leading to confusion for the horse. **

When using a curb bit with a curb chain, it is generally recommended to use regular side reins instead of running reins. Regular side reins provide a more consistent contact and support for the horse's head and neck, helping them to maintain a steady frame and balance. Running reins can create uneven pressure and may interfere with the action of the curb bit and curb chain, potentially causing discomfort or confusion for the horse. It is important to always prioritize the comfort and well-being of the horse when choosing equipment for riding and training. **

Side reins are used to encourage the horse to work in a consistent outline by connecting from the bit to the saddle or girth, promoting a steady contact and encouraging the horse to work in a round frame. Draw reins, on the other hand, are attached to the girth or saddle and run through the bit rings, creating a downward and inward pull on the horse's head, encouraging the horse to bring its head in and down. While side reins are used for consistent contact and outline, draw reins are often used for temporary adjustments in the horse's head carriage. **