I have a 10 year old arabian western pleasure mare, Im trying to come up with ways to build and bulk up her muscle. I will take any suggestions in the way of activites, nutrition, supplements, ect.
Backing a horse up on the ground muscles their back and rump up. Back a few circles before and after you ride. Make sure you warm up properly. Get the horse limber and supple. Teach your horse to leg yield and side pass. Walk and trot up hills.