It used to be the sleepiest exercise in the land. You could perform it lying down in full hair and makeup. When I did a stint at Pilates about 15 years ago, I’d wedge my sessions between work and dinner, knowing I wouldn’t have to shower and patch myself together afterward. It was no sweat. As in, I didn’t sweat.

Doesn’t that sound calming? Well, kiss those days goodbye because now, Pilates is a blood sport.