If you've been doing online classes, and your teacher mutes everyone, be honest, do you speak to yourself out loud during the class? 
I always had thoughts going round my head during real life classes, and I know you're not supposed to, but we're all human. Now that I've been doing yoga on Zoom, I seem to have become one of those people who speaks to themselves. We have an understanding that the living room is mine only for the duration of the class, so nobody else can hear me.