Kw-logo-smaller

Why We Yawn

Next time you're with a group of your friends, try this out. Take a big yawn, don't forget to cover your mouth, and wait to see how many other people yawn. There's a good chance your yawn will be contagious. In fact, before you even finish reading this story it is likely that you'll yawn at least once. Not that I'm trying to bore you, but just reading about yawning will make you yawn.

Yawning doesn't always mean you are bored. Adelie penguins actually yawn as part of their wooing ritual. Couples face each other and the males stand with their beaks wide open and face towards the sky.

As for why people yawn... good question. Nobody really knows why we yawn. For a while scientists believed that you yawned when there was too much carbon dioxide and not enough oxygen in your blood. Part of your brain realized this and triggered you to yawn. As your mouth stretches you inhale deeply, sending a shot of oxygen to the lungs and into the bloodstream. That theory went out the window because nobody can prove it.

The reason yawns are contagious? Power of suggestion perhaps. If you're out late with your friends after school, you're probably tired. You're probably on the verge of a yawn, too, and seeing one person do it is enough to drive everyone to yawns.

Have I made you yawn yet? If I have, I hope it's not cuz you're bored, but simply by the power of suggestion.

A Few Cool Yawning Facts

  • The average yawn lasts about six seconds.
  • 55 percent of people will yawn within five minutes of seeing someone else yawn.
  • Blind people yawn more after hearing an audio tape of people yawning.
  • Reading about yawning will make you yawn.
  • Olympic athletes often yawn before competition.
Related Stories:
150 Comments

latest videos

Poll

How Many Hours of Sleep Do You Get?

  • About 9 hours.
  • Less than 9 hours.
  • More than 9 hours.
  • It differs every night.

related stories

Micro_whyyouneedsleep-micro
If your parents give you grief about sleeping late, tell them kids need more sleep than adults! L...
Being tickled can send even the calmest person into hysterics. Just the thought of being tickled ...
Have you ever been talking to your friends and out came a burp before you could cover your mouth?...
Being tickled can send even the calmest person into hysterics. Just the thought of being tickled ...

Dear Dish-It in the forums

horroranimegirl
both   an everyother weekend thing         my dads always busy and my stepmom doesnt really talk to me      my real mom is clingy but we are always arguing so i always stay in my room at both houses
reply about 4 hours
hugebear
hugebear posted in Friends:
You doesnt have to wonder too much since your best friends with his sister. Ask your friend to ask him does he like you and takes it slowly and good luck :)
reply about 10 hours
_Monaaa_
_Monaaa_ posted in Friends:
Matty & Ana.
reply about 11 hours
shahgee
shahgee posted in Friends:
my best friends are also on kw ..one is nimra and the other one is meena :) :)
reply about 11 hours
geekynerd
geekynerd posted in Friends:
I have 2 bff's, who aren't on KW. Emi and Viya.
reply about 11 hours

play online games