Just wondered what peoples opinions of my friends mare are weight wise..?? She lives out 24/7 and is currently not in work. She is a pure bred Breton Draft horse, 15.1hh and 15 years old. Her ribs are easy to fell without having to dig your fingers in. She is only fed a light balancer with a handful of Top Chop lite and hay/grass. We want to fetch her back into work (she is a happy hacker). We have no school etc but can do road and hill work, she is incredibly lazy if allowed to get away with it and also has a habit of throwing her head down and snatching the reins. She is ridden in a full cheek french link. What would be the best kind of exercise plan for her??