I started doing pilates as part of my rehab post shoulder surgery.
I kept doing it because it was a great complement to aerial -- working core strength and flexibility in a much gentler fashion.
Along the way, I stumbled into a small group (class size is capped at 5) of folks who show up every week. Who make me smile and laugh, even while we're holding crazy poses and E. is telling us to breathe and to drop our shoulders.
The camaraderie is part of the fun. It's why I keep that weird Friday slot in my workout schedule.