I am a night owl and tend to stay up very late every night
Me too! I love being up late at night.
An early bird is the opposite of night owls they go to bed ad get up early
I'm trying to be an early bird but my body can't get used to it.
So you are trying to go to sleep early and get up early, that is tough for a night owl 
Yeah it is. Are there any benefits to being a night owl?
Well in several countries Night Owls are called B people while Early Birds are called A people
Interesting, I've never heard of that.  
People who are night owls stay up past midnight while extreme night owls are people who stay up till dawn