What they said.

I have no way of knowing anything about your gym or trainer. That being said, I would spend my money and time on a good classical pilates program over a gym membership any day. Pilates strengthens the whole body in a much more balanced way than weightlifting.

But there's the question of your spin class, which I assume is through your gym membership. Can you pay for individual spin classes on rainy days? Just a thought. As much as I like spinning, I've decided on pilates this winter. I still have a trainer, but I can only stand it about twice a week.