Sleep. If you are at work and your boss doesn't realize sleeping will make you more productive, go sleep in the toilet until you can quit your job and get one where you can sleep how and when you want.
Just don't take it to far. A coworker of mine grew a habit to rest himself flat onto the table in a free meeting room for a 30-60 minute afternoon nap. That was good for many chuckles because we had a loft office with glass-walls.
Then came the day where the investor meeting was scheduled in conf-room C...