We know we should do this or maybe we even want to do this, but something else we let come first. Is it that you're not setting yourself up to actually be able to do that because it is a bad time? Or your running shoes are always lost in your closet and it's just too much to go and find them. If you haven't, then the boundary just gets violated over and over again. It might make you much more productive and a better worker for the rest of the day.