Anything involving the reformer. I really enjoy using resistance throughout the ROM of a joint on the reformer.
My first mat class was my favorite because I was introduced to something new and fascinating.
At the last IDEA Convention, I took a class with Katherine and Kimberley Corp. They taught Mat Pilates using a device called flexcushion. What I liked about the class was the way the two were teaching. Their cues were impeccable, and they presented themselves and Mat Pilates in a very favorable light.