The older one is an OTTB, in good weight coming off winter, not too fat. He keeps himself fit in the field. Always canters out left lead then circles right with a clean flying change. Even after only being in his stall for four hours (it was quite warm and buggy today) he pranced through the stall and galloped off when I turned him out this evening. I always turn him out first. He has always had a good work ethic, a bit of a loaded cannon when we showed, but always remained in control. I think he is quite fit.
The other horse, a Dutch Warmblood with quite a bit of TB in his pedigree is fat, but he always is even when wearing a muzzle. He is basically very laid back, thinks he can go through life by just being cute. It will take some time to get him fit but back when we worked with a coach his breathing was always good and he never seemed to work up a sweat. He does have a good buck in him, broke my collar bone. Wasn’t really his fault, turned out he had a sore neck which I didn’t acknowledge.
I will do what most of you suggested. I will lunge with tack just a few minutes and then get on, probably just walking, leg yield, turn on the forehand etc. Their response to turn on the forehand always tells me what kind of horse I have that day.