Why Do People Yawn When They’re Bored or Tired?

Imagine you're sitting in class and your friend yawns, suddenly, you feel the urge to yawn too. It's like a magical brain message that says, 'I'm tired, so you are too!' Scientists think it has to do with mirror neurons, which help our brains copy what others are doing. When we see someone else yawn, these special brain cells make us yawn too, especially if we're tired or bored.