Inexplicable habits. I'm not talking about things you do out of compulsion, superstition, tradition or any other -tion. What's something you regularly do for absolutely no discernable reason?

We've lived in this apartment for just a week less than three months. I have ridden UP in the elevator exactly one time more than I have ridden it DOWN. And yet if I don't actively think about it I will always push the button for the sixth floor instead of the first floor EVERY TIME I get in. My door is literally 15 feet from the elevator. It's not I like I could have forgotten where I am by the time I get there.