And which is healthier? AsapSCIENCE did some digging, and got some answers.

The theory is that night owls are more unhealthy than early birds, but that is not the case. They just operate a few hours later than the early birds.

What are you?

I found myself trying to answer this question. I have to go with night owl, because on a typical weekend I'm usually in bed around 2 a.m., and up around 11 a.m. During the work week it's a struggle to get to bed before 1 a.m. and wake up by 8:30 a.m. I think that would qualify me as a night owl.

AsapSCIENCE found that being an early bird or night owl isn't something we choose, it's something that's passed down from our ancestors. They say it probably dates back to our ancestors who needed to sleep in shifts to protect their young from various predators. Good luck using that as an excuse when your alarm fails to wake you up next week for work.

The theory that night owls don't perform as well as early birds does have some merit. Most early birds are more positive, most of this is linked to the way the world works. It works in favor of the early bird. It's still a 9 to 5 world, night owls tend to operate off of that schedule, so social interactions tend to be limited.

AsapSCIENCE also found that even though night owls aren't as positive, they are more creative and bigger risk takers, this kind of evens things out.

Check out the video for the full explanation.

So, which are you?