No break

Does anyone else have no break and work a 9 hour day? How do you cope and handle it? Am I the only one that lays on the floor for 5 mins after putting the youngest to nap? What are you tips for including time breaks, because the extra mental energy it takes to entertain these kids 24/7 gets to me, I feel I’m constantly preforming for them that plus all the doings of the daily in and out. I’m exhausted. I should add this is a no screens house hold I work for.