How can you tell if a horse is being overworked? I lease my horse out to a girl that doesn't work him very hard ( she jumps about starter and very low BN) and just rides recreationally. She rides him 3-4 times a week and I ride 4 days a week. I also let my stable owner use him in lessons.The stable owner is in dire need of a few other school horses as she is using her other horses 3 times on her lesson days...which is pretty much almost the whole week. She's also been getting more and more students and using the horse I lease more in lessons, so with me and his owner he gets ridden twice a day a few days out of the week (3-4) this has always been a BIG pet peeve of mine as I don't think its fair for a horse to be ridden twice a day by different people. The weather has been especially hot latley as we live in California (100+) temps and she hasn't canceled lessons either...He is 15 and a half ish I think, still in excellent shape. I event him about Beginner Novice but he can go way bigger. I just want him to be happy and stay sound into older age. The lessons aren't always beginning either, some of them have jumping. Please reply!!!!!!!