Why is yahning contagious?
482971
The real question is:\nWhy don't people use spell check?
862109
Respiratory infections are contagious and are spread by droplets when people cough or sneeze.  You should spray hard surfaces with antibacterial spray and let it air dry and wash your linens in hot water and use bleach or antibacterial cleaner.  Pay attention to door knobs and sink handles as if he is considerate he prob. covers mouth and nose when coughing but would touch door knobs and sink levers with contaminated hands.  \nIt would be highly unlikely to catch his ear infection as how would it get out unless ear is draining.\nGet yourself some zinc lozenges and start taking them as soon as you get symptoms.  It will reduce the duration and severity of cold symptoms by kicking your immune into high gear.  This really works well but only in the first 72 hours of symptoms so get some to have on hand in case.  I always keep them in case.  Once at work some people were out 2 and 3 days with cold virus and I only had mild symptoms for 3 days and they were symptomatic for 2 and 3 weeks.  \nGood Luck
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".
647058
Go search the news.  It recently appeared to pass from person to person in a single Indonesian family, but apparently that was the 3rd time that that has happened on a very small scale.  That's why they were so concerned so long ago (and still are;) but so far, actual cases of it happening are very rare & isolated, involving a lot of close contact with the sick person.\n\nThey believe that the virus will have to mutate before it is capable of a pandemic, but that hasn't happened yet.
46612
You may have had rigworm somewhere else on your body and and touched your scalp or someone who had it touched your scalp. Ringworm is highly contagious. You must be sure to wash and disinfect everything that may have come in contact with you and control the area. Do not itch or touch it, if you do make sure you wash your hands immediatley.
394382
Yawns are contagious because people naturally emulate what they see others doing. For more, read a section in the Tipping Point by Malcom Gladwell.
428835
Yes giggling can be contagious.  \nYes laughing is good for you.\n\nI was at a jazz club last night, and my friend had a funny picture of her cat.  It was hilarious.  We laughed so hard, you know the belly-laugh.  A few other people who saw the picture of the cat joined us laughing.  Then a man takes a look at the picture, and he just stares at it then looks at us like we're all crazy, which made us laugh even harder.  So, yes, many of us caught the giggle bug, and the one escaped it.
558756
As far as you should know yawning is contagious. Sorry I couldn't read that five-letter word you tried to put in it.
355807
It is possible that yawns are contagious because at one time in evolutionary history, the yawn served to coordinate the social behavior of a group of animals. When one member of the group yawned to signal an event, all the other members of the group also yawned. Yawns may still be contagious these days because of a leftover response (a "vestigial" response) that is not used anymore. None of this has been proven true and yawns are still one of the mysteries of the mind.
404224
Yawning is not, technically, contagious... and this is the 363rd time this, or a similar question, has been asked.
246554
Yes. The mere suggestion of yawning can induce a yawn in some people. (In fact I'm yawning right now from reading your question.) So if you sent an email saying "I'm yawning" to such a sensitive person, even if (s)he couldn't see or hear you that person could yawn.\nAlso, two people might yawn excessively if they shared an environment that is conducive to yawning, i.e., low in oxygen or high in carbon dioxide, but that wouldn't really be contagion.
818623
1.  Asthma is definatley NOT contagious.  You will absolutely not get it from them.
444584
they are not contagios, they are contagious
857869
They probably think it's contagious. LOL.  Who knows?  But it's pretty stupid the way people act about it.
329034
We yawn because of a lack of Oxygen. Think about it: when you yawn more air comes in and sometimes after a yawn you feel rejuvenated for a little while. But this is contagious because if you yawn you are probably in an Oxygen-deprived environment and everyone around you is going through the same lack of Oxygen. And yawning is related to sleep because when you're asleep you're barely doing more than breathing, beating your heart and dreaming which doesn't take up much oxygen but you still get the same amount of oxygen as you would awake in the same room so there's more oxygen to relax your brain and mind and everything else that might be tired.
812140
Hi, i have had dogs all my life, they  have been around me and my kids when we have had the flu and the cold over and over again and they never got sick, i don't think that a dog can get the flu or the cold from a human ,,, but there is a flu or cold they could catch , they get  fever, runny nose and a cough ,, very contagious between dogs that is called kennel cough .and the dog gets very sick that requires to be seen by a vet,,just call a vet or shelter and ask them,, its just a question that they should be able to give you some kind answer that you can be sure ..\ngood luck\nLeena
216325
No.  It is very contagious.