why are yanws so contagouis?
470027
Not sure... Never did have yanws...\n\nA Yawn:The yawn reflex is often described as contagious: if one person yawns, this will cause another person to "sympathetically" yawn.[2] The reasons for this are unclear; however, recent research suggests that yawning might be a herd instinct.[3] Other theories suggest that the yawn serves to synchronize mood behavior among gregarious animals, similar to the howling of the wolf pack during a full moon. It signals tiredness to other members of the group in order to synchronize sleeping patterns and periods of activity. It can serve as a warning in displaying large, canine teeth, thus proclaiming, "don't attack while I am sleeping..." The contagion of yawning is interspecific (i.e., try yawning in front of your dog). Ironically, yawning in public is generally regarded as impolite in the West, but came into fashion in polite French society for a brief period in the late 18th century. Oddly, sometimes sympathetic yawning may be caused by simply looking at a picture of a person or animal yawning, or even seeing the word "yawn".
465986
I know someone who had it 3 times--and each time was pretty bad.  He is a very rare case though!  If you even THINK you may have it, stay away from people like infants and the elderly--you may be contagious and you do not want to give it to someone who has a compromised immune system!
11740
Because they are sociopaths. It probably had to do with the way they were raised. In mice a gene has been isolated among a strian of male mice who rape and kill members of their own colony. There is still lots to be learned about why people do horrible things and the answer has nothing to do with "the holy spirit". It will come out eventually.
325601
Professor Andrews told Scientific American yawns may be contagious because we human animals are trying to communicate changing environmental conditions to others, possibly as a way to synchronize behavior. Obviously, this would be one of those caveman-type mechanisms that is no longer needed that our bodies remember and still do.\n\nWhen we yawn, we draw in more oxygen and remove a build-up of carbon dioxide. Larger groups produce more carbon dioxide. So one theory holds that we yawn when we're in large groups of people to purge the carbon dioxide--and in so doing, we set off a chain reaction. But Robert Provine, a psychologist at the University of Maryland, Baltimore County, tested the theory and says it's bunk. Giving people additional oxygen didn't decrease yawning and decreasing the amount of carbon dioxide in a subject's environment also didn't prevent yawning, notes the How Stuff Works Web site.\n\nWhatever the reason for yawns being contagious, How Stuff Works reports that 55 percent of people will yawn within five minutes of seeing someone else yawn. In addition, blind people will yawn after hearing others yawning. And we're sure that reading and writing about yawns is enough to induce one!
306677
It's in their nose!! Thats why its always wet,(and dry when they are sick.)
239646
It's contagious to only those with an empathetic mind. Not everyone has one, so not everyone is going to yawn if someone else does.\n\nDon't listen to that Brisbane Roo character--he's full of it. It's true what he said about periods, but that has nothing to do with yawning.
295331
Contagious is the wrong word. \nBut they are a suggestion, almost hypnotic, to yawn.\nAs is the word "itch", just the talk of creepy crawlies and itches is enough to start you itching somewhere on your body.\nHope this helps
547378
It seems as if there are some external sources making them sick- do you live in a wet environment? Are there signs of mildew on the windows or walls? Do you have pets, especially ones that tramp around in the weeds? Where do you and/or your husband work? Bringing in something on your clothes from work that may be toxic? What type of cleaning products do you use? Are you spraying their toys/room with Febreeze?- this has been known to be dangerous to animals! You need to do some serious research around your house and track poosible sources of toxins coming in or growing in your house.Not enough info for now, sorry. Allergy testing should rule out foods, but not environment.
893865
i dunno............................they r sick!
289289
Between 40 and 60% of the population is susceptible to contagious yawns, but the reason why yawns are catching is unknown.\n\nI yawned once when typing up this answer.
444584
they are not contagios, they are contagious
159435
Yep : (. The viruses that can cause these types of upper respiratory tract infections are VERY contagious.
663687
usually its a big clump of mucus and bacteria that was kinda stuck to your nasopharynx.......very smelly...thats the bacteria in it......you should definitely gargle with warm salt water over the next few days......these things will break loose from time to time......optimally its great if you dont have them but nothing to worry about if you do...
803004
their species is a colony-hive-mind.  they are designed to work together in collaboration as they build their nests and gather food, and more importantly, multiply.  they pass messages through the use of pheremones.  I think there is much we can learn from these Canadiens.
292528
Yawns usually occur because you have some lack of oxygen, usually when you are growing sleeping and not breathing properly. When a person yawms next to you, you usually stop breathing yourself, thus triggering a "contagious yawn." Need to prove this false? Next time you see someone yawn, be concious of it and make yourself take a deep breath. You wont get that contagious yawn!
3118
Is it because they walk around like french jerks?
1056778
Once all of the spots have formed scabs they are no longer contagious.  Mind you, do you really want every stranger you see berating you and calling you a bad parent.  Just because you think it's okay doesn't mean everybody else will.  When it comes to parenting, everybody's a busybody.