Hello Robert LoFaso,
I have not; but, I know others who have and are keeping up with their lifestyles.
We all have limitations to deal with; please do what you know to be best for your health and the rest will follow.
Remember, it is the client’s workout, not yours; therefore, take advantage of paying close attention to the client when you need a break. No one will be the wiser.
I wish you the best.