You heard me. Go the fuck to bed. What are you still doing up?
No, but seriously. Amongst the artistic community, sleep is highly underrated. I'll keep this brief. People will tell you all the time about how they stayed up all night working on a project and got so much accomplished. What they're not telling you is that they stayed up all of the past five nights, and really got extremely little accomplished compared to the amount of time they actually spent on it.
Sleep is important for processing thoughts, and recovering. Also dreams are awesome, if you're one of the lucky few who has total recollection of dreams, you'll be surprised what you can gain from that, inspiration-wise.
While theoretically, you can just keep eating and live perfectly fine without food, it'll make you a retard. It's hard to write if you're just dumb as a box of rocks.
Now, go to sleep.