Why Do We Yawn When Others Yawn?

Have you ever seen someone yawn and suddenly felt your own mouth open? This is called contagious yawning. It happens because our brains are wired to connect with others. When we see a yawn, something in our brain says, 'That person is tired or relaxed, so I should too.' It is like a social signal that helps us stay together.

Scientists think this reflex started a long time ago when humans lived in groups. If one person got tired and rested, it was safe for others to rest too. Today, we still do it automatically. It shows how much we care about the people around us.