Everyone does it.
Some do it better then others.
Some do it more then once a day.
Sleep.
It’s been around for quite some time (I knew about it when I was but a baby) and in all that time, no one has figured out WHY we sleep.
Studies have shown that the body machine itself gets the same amount of a “recharge” from 15 minutes of quiet restful repose as it does from 8 hours of quality sleep.
Then why does the body shutdown?
Why will a person go mad if sleep deprived for extended periods?
I have a theory on that… ( SHOCKING!!)
First and foremost is your senses are working every second of everyday.
Everything you see, hear, smell, taste, etc. is sucked in and staged in your brain. Peripheral vision, random thoughts, your office workers beef and bean tostada fart, elevator music, that shamwow commercial. All that stuff is sucked into the great computer residing in your skull.
There is where it sits and accumulates. Your brain stages it for current and future reference, and waits for a chance to compile it and store it away. Then when you crash for the day, your brain shuts down all physical abilities except for the core functions, (it actually releases a chemical that in essence locks down the machine.) With the machine shutdown, not only does the brain not have to worry about more information coming in but it also has additional computing power to do its job.
With the machine shut down, it can focus on compiling, storing, sorting and deleting all this information it has collected.
What happens then is the brain sorts and stuffs and moves massive files around in your mind and in doing, so, other items are moved, shifted, etc.
You know how you can see a bunny in a cloud, Jesus’ face in a piece of toast or an odd shadow taking on human features? Your mind naturally seeks out and looks for patterns in everything.
Well, you can picture what happens next. Basically your mind is sitting there minding it’s own business and along comes your brain and dumps a box full of pictures and facts and smells and whatnot into a big pile as it starts to sort through the mess. Images of your high school art class combined with information from a lecture the previous day added with a smell of perfume from the weekend and a random thought about elephants flying, All that stuff sitting in a pile being sorted and filed away.
Your mind see’s all these images and input together and immediately tries to put them together to make sense. After all there has to be a pattern in here somewhere.
Congratulations. You just created your first dream of the night.
But then again I could be wrong.
The bully. He alternates between jolly and grouchy — but even his jolly side is a little scary sometimes. He enjoys "teasing" his subordinates, especially anyone who's different in some way, like having funny-shaped ears. "Notices" his female underlings a little too closely. He does give an inspiring 
The father figure. He's your best pal, playing poker with you and listening to you whine about your holographic love life — until you piss him off, and then suddenly he's all shouty and mean. He's like your nice uncle who suddenly turns vicious. It actually startled me the first time Picard showed his bitchslapping side — and yet it shouldn't have. I've had bosses just like this. They're all about "nurturing," until you don't get their drycleaning to them on time, and then suddenly it's the screamy echochamber for you. He's also incredibly long-suffering, constantly annoyed by every little thing that goes wrong. Likes to bust out with a speech explaining the "moral" of everything that happens.
The politician. On the surface, he's a big swaggering warlord... but it only takes a glance to realize he's really just a conniving weasel. He'll say anything to get ahead, and always manages to wind up in charge because he maneuvers all the smarter people into destroying each other while he remains unscathed. If you start doing too well or — worse yet — become too popular around the office, he orders you to do an impossible task and then blames you when you fail. Or he tries to maneuver you into self-destructing somehow, by giving you contradictory or unrealistic orders.
The cold fish. He's always brooding and staring into his raktagino. When he does smile, it's usually a bitter smile at some irony he's spotted. Seldom praises your work, and when he does, there's often a bit of an edge to it. His main other mode besides glowering is screaming rage. But he does at least know how to laugh at himself... in a gloomy way.
The blamer. She's always right — even when she changes her mind three times. She'll take a tough stand, but then change her tune if her cronies disagree. She lectures you about her principles, but they're all totally disposable. She's all like, "No, we are not going to make an alliance with the Denim," "There is no way we are possibly going to trade technology with the Gherkins," etc. etc. But when it comes down to it, she's all about expediency. And then after one of her little ethical shortcuts blows up in her face, it's always your fault, not hers. If you ever go around her, she puts on her hurty face and talks about how betrayed she feels. I've totally had this boss, too.
The queen bee. She claims it's all about the group, and what's best for the "collective." It's not about her at all — in fact, just pretend she's not there. She's just there to speak for the group. And then she insists on being all showy — ooh, look at me lowering my head and spine into my slinky new body! She has to be the center of attention, even while she's pretending that she's one small part of a huge collective. She enjoys seducing you into her group, but once you join, you'll just be one of her bees. And if you ever get away, she'll keep bugging you and showing up when you're trying to chill in your regeneration alcove.
The hot-tub boss. Captain Archer is never mean — but then he expects you to strip down to your undies and get "decontaminated" with him every other Friday. He winks really big when he says it too: "Hey, you haven't been 'decontaminated' in a couple of weeks. I bet your rads are off the scale. Let's make a night of it. I'll bring the dog." Plus he's always inviting you for dinner in his quarters and talking about "Chef," which is probably like a pet name for a part of his body since you've never seen an actual chef around.