Well earned rest
There is nothing wrong with taking a well earned rest.
It re-charges the batteries and gives us time to wind down, allowing our weary brains a break from solving the worlds problems (or just the household problems). Don't panic if the ironing isn't done, it will still be there when you rise from your break.
Even an afternoon nap is a good once in awhile, mine is often on a Sunday afternoon with some classical music or hymns playing quietly in the background.