Some instructors make it look SO easy: they break down complicated clogging steps without having to stop and do the step in its entirety over and over to figure out the next instruction to give, they transition seamlessly between calling out counts/step names/portions of steps as needed, and they effortlessly run the music and microphone with no glitches whatsoever. Their hair still looks good after teaching all day, and I suspect their forehead sweat doesn't run down into their eyeballs.