I'm aiming/hoping to get my 9 month old colt Storm, (who you've heard lots about already, because of his love of being a nuisance) into a few local in-hand shows, only thing is he's fat. Not like podgy, like OOH MAMA YOU FAT! I don't have the time or space, mainly time, to walk him miles every day to burn off the chubbawubba, and I was wondering if I could do some light walk and trot lunge work, or would it damage his joints like they say? Which seems absurd seeing how much time he spends careering up and down the paddock. I don't know, any advice is very welcome! Cheers!