Ohh, night-time is for play! But one creature's play is another's work. So depending on what shade of the spectrum the eye peers through, you're probably right.
The next person.. oh come on, let it out.. you know you want to stretch those arms up and let out a big, sense-filling yawn. *wondering if reading of a yawn works like seeing someone actually yawn.. hell even when animals yawn, it seems to work, right?*