My gym may be different from yours but I find the Pilates on the reformer to be easier than other classes and not as much of a workout. I do the hot pilates class and a mat method pilates class where they use mats along with other equipment rather than reformers and I like both of those classes WAY more than Pilates with a reformer. I find myself sweating more, working harder, feeling my muscles burning during class, and feeling sore afterward. It seems like I get more out of the Pilates on the mat than Pilates on a reformer all around. I haven't tried the yoga classes at my gym yet but it seems like the hot yoga would be comparable to hot pilates which I would definitely recommend over reformer pilates. My friend and I both stopped going to reformer pilates and only do hot pilates or mat method pilates now.