Why Do We Yawn When We're Tired?

Yawning is like a magic breath that helps you feel more awake. When you’re tired, your brain gets sleepy, and yawning sends a fresh wave of energy through your body to help you wake up. Imagine your brain as a little sleepy dragon, yawning is like giving it a big splash of water to make it roar again.

Test your understanding →

Examples

  1. You're sitting in class and suddenly yawn because your friend yawns.
  2. Your dog yawns when you wake him up in the morning.
  3. You’re watching a boring movie, and before you know it, you’re yawning too.

See also

Discussion

Comments (0)

Categories: Science · neuroscience· sleep· human biology · Text is available under the Creative Commons Attribution-ShareAlike License.