Gym question: Exercise leaders

At my gym I just noticed every group exercise leader is a woman.

Is that everywhere?

Do you really think every group exercise leader across the world is a woman? Are you asking if there’s a rule?

The spin and TRX leader at our gym is a guy. The cardio boxing teacher is a guy. I think some of the yoga instructors are guys. A guy did a kids’ hip-hop dance class for a while.