Watching yourself teach on video is always educational.
Jon PCF, one of the coaches at my gym, recently filmed himself teaching olympic lifting.
I say 'right' a lot. So every time I say 'right', I have to do a burpee.
We counted 27 - not including the 3 that he did earlier in the class.
Personally, I would be happy if 'right' was my only verbal tic. I've found over the years that I replace one verbal tic with another (or 2 or 3).
Thankfully, half of my training these days is through online tutorials. Hooray for audio editing software!
I am in the process of creating a temporary video series for a project. This is an emergency stop-gap until I get the tidy interactive tutorials completed. Usually, I would do documentation and be done with it. This group wanted video.
Below is a demonstration of why I normally do not try to narrate while filming. (30 seconds should be enough to get the point across)
I be an edukayshen perfeshunul.
Do not try this at home.
And kudos to those who can film and talk at the same time.