The most simple unit measure of life is a day. We use it to parse and organize the comings and goings of our lives and their direction (“One day…”).
Sometimes days take on an extended version. You go out and do something that takes great focus and energy and half your day. Then you go home and get a rest before taking on another part of your day as equally demanding.
If we all worked so hard on our days, then why are we going out?