My own body clock is my biggest pet peeve

It’s annoying how I can be dragging my feet at 3pm at work, barely keeping my eyes open, even though I’m not that physically or mentally tired. But as soon as it hits 11pm or midnight, I’m suddenly wide awake and ready to watch a movie, read a book, or play games. I hate that I’m more productive and alert at night when I’m supposed to be working.