At the gym I go to, the group exercise room is enclosed by glass walls on two sides, which makes the room open and airy. Outside the room there's a wide walkway, then the first of several rows of exercise machines.
I like to pretend my body moves as well as it did when I was in my 20s. However, that fantasy lasts until I look into the mirrors that line the other two sides of the room, which brings me back to reality pretty quickly.
At some point, he moved on and the class ended. I headed for the locker room to shower and get ready for work. Although I looked around the gym when I left, I didn't see the man anywhere. That's probably a good thing.