Sleep is super important -- just ask these kids.
While this little girl was throwing a tantrum, her big brother said sternly, "Did you have a nap today?"
"I didn't!" the girl wailed, to which her brother replied, "Well, you need one."
"No, I don't!" she insisted in the clip, which was an "America's Funniest Home Videos" winner.
Trust us, kid. Don't fight it.
Correction: A previous version of this post referred to the smaller child as a boy. According to "America's Funniest Home Videos," she is a girl.