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

share with your friends


Twitter Facebook Myspace Digg


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

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

Pokemonfan101
Pokemonfan101 posted in Friends:
once some1 in my class i hated peed in my best friend's drink bottle i was so mad if the teacher wasnt there he would have been killed by ME! he got in so much trouble and was kept down a year and then expeld! he was evil! evil i say EVIL
reply about 3 hours
american_brit
american_brit posted in Friends:
You really like this guy :p Hmm... my guess is that he does, in fact, like you -props to you chica! (: However, I can not be positive. From what I can see, you really have two options here (okay, I suppose there are more...): 1. You can wait. If he does like you, he'll let you know eventually. From your description it seems that he might be a little shy when it comes to such feelings.I could be wrong...- but if he truly does, he'll be able to overcome that. Note: A friend's looking at you they'll probably continue to do so after you've turned to look at them. Guys who like you often turn away or make funny faces (friends make faces as well). It  really depends on their personality.    2. Talk to him. It'd probably be hard, but  (ehhh... I'll have to continue later...) 
reply about 6 hours
shae508
shae508 posted in Family Issues:
Punch him. I'm kidding, don't hit.  Now, I WOULD suggest talking to him, but people had alredy done that. so here's the devil way to do it. :devil 1. Eat all HIS food and yours, give him a taste of his own grape-flavored medicine. 2. Next time he's out steal back your's and your mother's speakers. 3.  Refuse to do your chores too, when your parents question it, just say if your brother doesn't have to do it, then you don't have to either. there, hope this helps. :) For more devil tips go to. BLAHBLAHNOTREALWEBSITE.FAKE.
reply about 13 hours
getreal62
my mum always is crying qnd she thinks that whatever she does is not good enough for us :(
reply about 21 hours
werewolf7
He is younger.
reply 1 day

play online games

Candy-100

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

1515_gl_kidzworld_100x100_jpg_fz

Intriguing planets, weird and wonderful characters; challenge friends and find a...

157262_(2)

When you go back to Candyland, you’ll wonder why you ever left in the first plac...

100x100_ra_logo_girl

Uncle George has left you his farm, but unfortunately it’s in pretty bad shape. ...

_thumb_100x100

Shoot blobs with different properies to merge yellow blobs. Your blobs can be re...