I always stay up so late.
Night owl (person)
A night owl, evening person or simply owl, is a person who tends to stay up until late at night, or the early hours of the morning. Night owls who are involuntarily unable to fall asleep for several hours after a normal time may have delayed sleep phase syndrome. 
The opposite of a night owl is an early bird – a lark as opposed to an owl – which is someone who tends to begin sleeping at a time that is considered early and also wakes early.
relates, “My older brothers would always let me stay up way too late on Friday nights, drink Mountain Dew, watch horror movies. I was always getting into their comic books… Heavy Metal and Creepy and Tales from the Crypt. Also, at the time – this is going back to the mid 70s, almost into the early 80s – they were reading Tolkien and lot of that, so I had that as one side of my experiences. Growing up in a haunted house, watching horror movies with my older