yeah, I did some mat classes and then last year did about 15 one-on-one sessions w the Pilates equipment. I stopped because I overdid one session and aggravated an old back condition--precisely what I was trying to avoid.

I prefer activities that I can either do entirely on my own or which have a faster pace. (tho I do yoga occasionally!)

I find it more useful to use a stability ball. I hate it, but it works.

Most people who try Pilates seem to love it, so I'm probably in the minority here.