When I was at work in our huge headquarters building, the company permitted an aerobic dancing group of employees to use a big, carpeted space outside the corporate gym after hours. I often passed it on my way to and from the gym. All the young, fit, shapely women wore Spandex. The older, out-of-shape women wore sweats. The few men in the class hid in the back of the group, the better to hide their missteps.