The fitness instructor didn't come back.
Brother, I'm a fitness instructor. Generally, the gym closes at night 10, but closing does not mean getting off work. Often/kloc-have meetings after 0/0 to talk about performance or something. If all goes well, I will finish it before 1 1. If things don't go well, I will arrive at 12 or even later on the day of the performance, so it is normal to get off work late.