If you’re really into the TV show you’re bingeing, you might spend an entire weekend afternoon tearing through episodes—taking stretch breaks or refreshing Reddit or ordering takeout while you’re at it. Now, imagine taking it up a level. If you’re hyperfixated on that show, you’ll be so engrossed you’ll forget to eat or get up to go to the bathroom; you won’t check for new messages on your phone or collect the groceries the delivery guy dropped off, emerging only after you’ve finished the entire series.