Kw-logo-smaller

Why We Yawn

Yawning doesn't just mean you're tired.
Yawning

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:
>
>

readers voted!

Comments

gabbyyo

gabbyyo wrote:

stanky breath
commented: Sun Feb 02, 2014

Keekeow

Keekeow wrote:

* Poker face *
commented: Wed Jan 29, 2014

kmmonster

kmmonster wrote:

Hey girl,Hey~!!!
commented: Wed Jan 15, 2014

there are 150 more comments

Please login or register to add comments


like this article?
Sign up now to get more just like it!

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

AlphaT
AlphaT posted in Friends:
Tell him, but not like "Hi, I like you" Ease it into a conversation, maybe with a joke?
reply 1 minute
jordand08
jordand08 posted in Friends:
Then tell him.
reply 13 minutes
animals-are-cool
I know how you feel but you parents don't HATE you
reply 37 minutes
darkvisions
darkvisions posted in Style:
Hot topic and Spencer's
reply 44 minutes
Starflyamme
Starflyamme posted in Friends:
Thanks that's a good idea!  :|
reply about 1 hour

play online games

Candy-100

A great online version of the famous Candy Crush. This is the best game launched...

Big_icon_(7)

Have you ever fancied being a ranger like those fantasy characters you love so m...

Hour-of-code-tumb

Millions of Students will be doing an Hour of Code with Tynker December 8th-14th...

Big_icon_(4)

You run across the city in a car chase with the police officers.

Big_icon_(6)

The evil master kidnapped all of your friends!