I assume you're just doing Pilates mat work? There's another whole side of the discipline with equipment - but you really have to make sure you go to a studio with really high-quality instruction (which it sounds like your instructor runs). And don't - repeat don't - order a knock-off "Pilates machine" online and expect it will be the same. It might give you a decent workout, but it will at best be "Pilates based" not Pilates as many of us have known it through the years. Which is fine - just because I'm a Pilates purist doesn't mean everyone has to be, but I do think one needs to be careful with the labeling, especially when something that had been obscure for most of the years since its development becomes suddenly popular. That's both a good and a bad thing if you know what I'm trying to say.
I love Pilates. I've done it literally for over 20 years, back when pretty much the only people who knew about it were dancers. I even got certified to teach a number of years back, but I find that although I love doing it I hate teaching it. Now I have a proper reformer in my home and I work out on it at least once a week, often more. It's the only form of exercise I have the discipline to do at home on my own. I've quit too many gym-based "Pilates" mat classes to count since most don't meet my overly-rigorous standards, but I have found a few that were good.
In any case, it's great for strength and flexibility. And it's a lot harder than it looks.
