Hello Amanda Cremonini,
I don’t participate, rather, I instruct. I go through the workout and the clients mirror me until it is time to correct form and/or teach a new skill. It depends on the class, the clients, the weather, the motivation, etc. By “participate”, I assume you mean do the exercises; so, I do both: exercise and instruct, depending on what the clients need, since it is their workout.
It is expected that the instructor give the best session possible in the clients’ best interest.
NAPS 2 B Fit