Popular advise always tell you to sleep early, and to rise early. You get more things done that way. You'll also be more productive. It's no secret that some of the most successful people in the world are early birds. But there are also some who just don't sleep much, or sleep very late, and yet, are just as successful. Here's a science video looking at which group is more successful in life.

Are you an early bird or a night owl?