I'm currently rotating between 7 active watches, among which there's one I wear daily. The thing is, that one I only wear to sleep. It's a watch with dual clock faces which acts as my designated travel watch (one clock face to indicate Singapore time, and the other to indicate local time wherever I am). I sleep wearing it so I don't have to prop myself up to tell time if I wake in the middle of the night, and I've done this for so long I hardly remember a time when I've not worn a watch to sleep. The strange thing is this watch doesn't glow in the dark, and telling time still requires approximation in the dark. I guess old habits die hard.