system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 What js the difference between unconsciousness and sleep?
gpt
Imagine your brain is an office building.

During the day, when you're awake, all kinds of stuff is going on. During the night, much less is going on, but there's still a regular schedule for who's supposed to be there overnight and what's supposed to be happening. There will still be security guards on duty, janitors cleaning, and probably some office workers working during the night. That's what being asleep is like. It's something your brain does intentionally. It's scheduled, and your brain has certain maintenance work scheduled for sleep time.

Unconsciousness is more like "there was a fire in the building and everyone has been evacuated." A lot of the normal stuff your brain does while asleep is not happening.