I have had the pleasure of painting many murals over the last several decades. It's so refreshing to get to work on such large scale projects. But, it sure does take a toll on your body. I have never been more sore than when rolling home after 10 hours of painting above my head, on a ladder. Multiply that by a week and you have successfully accrued many hours on the heating pad and several visits to PT. That's why I am so impressed with people like the wall dogs who do this every day. They are passionate and devoted and entirely talented. Take a look at them creating a sign for the Etsy Holiday Shop.
I could watch artists create all day. And their comment at the end of the video-- 'learn to respect the smallest of details' is such a true statement. It applies to all creative fields and really does set apart the good from the best.