I recently bought a 5 year old quarter horse mare. She is in reining training and being ridden fairly often and isn't quite as toned as I'd like her to be, she seems like she is having a hard time keeping weight on. She was recently wormed and vet checked and vet said everything was okay and just to add a little extra food. So right now she is being fed alfalfa twice a day (boarding facility and don't have any other choices) and 3 pounds of Triple Crown Complete daily. She has access to a mineral block as well. Is there anything else I can give her to add some extra bulk onto her and maybe some shine? I curry comb her daily to help give her some shine. My other concern is that there is sand throughout the whole boarding facility. Her stall is mainly sand except for her feeding area which are mats that are swept off daily and she eats from a hay net. Should I be doing some sort of sand purge as well? Thanks in advance for the answers, I'm a new horse owner!