At work, you just want to power through, to get done what you need to get done, so that you can go home. This, unfortunately, leads us to lots of bad behaviors and unhealthy choices. We skip meals—or eat meals out of the vending machine. We stay at our desk as long as possible, sometimes not stopping to do anything but go to the bathroom.
A world where most menial jobs will be taken over by robots is coming. And in that future, humans will focus on cognitively intense jobs where critical thinking and creativity are highly valued. How fast that will happen is an ongoing argument, but what is happening already, and will also become more widespread in the future, is the use of cognitive performance enhancers at school and at work.