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Why is yawning contagious?


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#1    zarvirus

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Posted 17 June 2006 - 09:39 PM

This is a fact but no one has a fully convincing explanation of why is yawning contagious, we can see someone yawn and unconsciously do the same thing...scientists have recentlu found that this is not only a human conduct but also an animal conduct, but again none seem to know why is is contagious...any clues on this one?

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#2    Lizard King

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Posted 17 June 2006 - 09:52 PM

*yawns* No joke, when I seen the picture of dude yawning, I had to yawn too.

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#3    zarvirus

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Posted 18 June 2006 - 07:32 AM

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*yawns* No joke, when I seen the picture of dude yawning, I had to yawn too.


I know but go you have any clue why is so contagious?

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#4    Avinash_Tyagi

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Posted 18 June 2006 - 08:12 AM

Probabaly seeing someone yawning sets of a response in your brain that triggers your yawning response, which would indicate a relation between sight and yawning in the brain.

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#5    Roxie

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Posted 19 June 2006 - 07:58 AM

It could be a way of making yourself non-threatening to the other person. It may be that when we were sll cavemen, that yawning could have shown that we were tired and therefore not at our best, making us open to attack. Perhaps by also yawning, we show that we don't want to attack the person?  hmm.gif

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#6    Beckys_Mom

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Posted 19 June 2006 - 09:24 AM

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This is a fact but no one has a fully convincing explanation of why is yawning contagious, we can see someone yawn and unconsciously do the same thing...scientists have recentlu found that this is not only a human conduct but also an animal conduct, but again none seem to know why is is contagious...any clues on this one?

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I am yawning just by looking at this sleepy.gif  so it must be true...it is contagious LOL


I think in a group of men...farting and belching is also contagous...once one guy starts they ALL join in to see who can do the loudest and the smelliest...no joke  blink.gif  w00t.gif

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#7    Bone_Collector

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Posted 19 June 2006 - 09:39 AM

It is a psychological thing. There is always a thing in us to be unrestricted and free, so when we see someone at ease and yawning, we involuntarily want to do it too and so, viola! We yawn. *yawns* laugh.gif

Edited by Bone_Collector, 19 June 2006 - 09:52 AM.

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#8    Raptor

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Posted 19 June 2006 - 09:45 AM

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It could be a way of making yourself non-threatening to the other person. It may be that when we were sll cavemen, that yawning could have shown that we were tired and therefore not at our best, making us open to attack. Perhaps by also yawning, we show that we don't want to attack the person?  hmm.gif


Most ideas of why yawning is contagious stem from the neanderthals, but zarvirus says it happens among animals aswell, so it should have happened long before cavemen.


#9    SkyDive

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Posted 19 June 2006 - 09:57 AM

mind over matter and the power of suggestion!

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#10    mandricius

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Posted 19 June 2006 - 01:57 PM

Maybe in early humans, yawn contagiousness might have helped people communicate their alertness levels to each other, and thus coordinate their sleep schedules.



#11    =Jak=

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Posted 19 June 2006 - 02:29 PM


Emotion is to understand by others..  if you are sad others can feel it..  happiness, anger.. etc..  yawn also same category..  yawn comes when you are tired..   (mostly tiredness of mind)  And here in this world..  most of them always are tired by their own mind..  yawn comes when you need topic change in your mind..  when a person see somebody yawn..  they too feel like change their topic.. (who don't want a change) no one can live in present..  this Emotion is just faster like Electric motion,, that is a mystery..  

If someone even after see a yawn don't want to yawn..  just snap..  even if the person snap when they yawn..  can avoid others contuining it..  by this you can break the wave..

I may be wrong... because this is my observation..  i can't prove it

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#12    Urisk

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Posted 20 June 2006 - 03:16 PM

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It could be a way of making yourself non-threatening to the other person. It may be that when we were sll cavemen, that yawning could have shown that we were tired and therefore not at our best, making us open to attack. Perhaps by also yawning, we show that we don't want to attack the person?  hmm.gif


Or the opposite? Baboons yawn, as do hippos. Both as a threat display. Whether this is the same "yawn" I dunno. I reckon it's probably just a sub-conscious thing. Everyone says it, so it ends up as true.

Actually why do we yawn anyways? Is it to wake ourselves up when sleepy?

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#13    Raptor

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Posted 20 June 2006 - 03:58 PM

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A more recent hypothesis is that yawning is used for regulation of body temperature. Another hypothesis is that yawns are caused by the same chemicals (neurotransmitters) in the brain that affect emotions, mood, appetite and other phenomena. These chemicals include serotonin, dopamine, glutamic acid and nitric oxide. As more of these compounds are activated in the brain, the frequency of yawning increases. Conversely, a greater presence in the brain of opiate neurotransmitters such as endorphins, reduces the frequency of yawning. Patients taking the serotonin reuptake inhibitor Paxil (Paroxetine HCl) have been observed yawning abnormally often.

Another theory is that yawning is similar to stretching. Yawning, like stretching, increases blood pressure and heart rate while also flexing many muscles and joints. It is also theorized that yawning helps redistribute an oil-like substance which coats the lungs and aids breathing. Some have observed that if you try to stifle or prevent a yawn by clenching your jaws shut, the yawn is unsatisfying. As such, the stretching of jaw and face muscles seems to be necessary for a good yawn.


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It can serve as a warning in displaying large, canine teeth. This phenomenon has been observed among various primates. The threat gesture is a way of maintaining order in the primates' social structure.


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Edited by Raptor X7, 20 June 2006 - 04:00 PM.


#14    zarvirus

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Posted 20 June 2006 - 04:00 PM

Quote


Or the opposite? Baboons yawn, as do hippos. Both as a threat display. Whether this is the same "yawn" I dunno. I reckon it's probably just a sub-conscious thing. Everyone says it, so it ends up as true.

Actually why do we yawn anyways? Is it to wake ourselves up when sleepy?

RKD


i think we yawn to remember ourselfs that we are in need of something, like food, sleep, etc...

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#15    Dezmond

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Posted 20 June 2006 - 09:24 PM

Lol I really had to yawn when reading this topic.

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