I'm inside your house and always have been.
In the day i'm usually perpendicular to you but in the night parallel to you.
You rarely think about me but use me daily - you even have to!
I'm five letters long.
Who Am I?
Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up.
Sign up to join this communityYou are
the floor.
In the day i'm usually perpendicular to you but in the night parallel to you.
During the day we are upright but at night we lay down.
You rarely think about me but use me daily - you even have to!
We have to walk on the floor but we don't think about it.
Are you
The floor?
Perpendicular to you during the day, when you are upright, and walking around. Parallel to you at night when you are lying down in bed.
You have to use it to move around your house (unless you can float), but don't really think about it.