He's on the older side, though, about 20, but he has a lot of spunk!
Anyway, are there any good exercises I could do to help him get back in shape? He hadn't been ridden for a few months, and I'm not pushing anything, although he likes to go (however he's the most comfortable horse - walk, trot and canter, I've ridden...it's truly a great ride!).
He's always relaxed, however I'm going to ask his owner to put him on supplements or possibly bute. He's older, stiff and needs new shoes, but hopefully for the time being he'll be fine.
Feel free to ask questions if needed.