You may think it's OK to hit the hay around 3 a.m. and then sustain yourself on coffee and chocolate all day. But you might not be aware what that sleep deprivation is doing to your face.

BuzzFeed posted a video showing what four young sleep deprived people are going to look like if they don't get some more shut-eye and the results weren't pretty ... literally.

Every single person had a crop of fine lines and wrinkles all around their eyes. They were also plagued with loosening skin (sleep depravation breaks down skin collagen), eye bags and prematurely gray hair.

So take our advice before it's too late – turn off the TV and get some sleep!