Do you follow others in yawning?

i can scientifically explain this..... we yawn jus because our brain receives less blood that time.....n after yawning brain receives more blood n we becum more alert.... we yawn when we seee others yawn ...cause there is a stimulating centre for yawining in cerebellum of brain n it gets acrivated by visual reflex n the pressure changes in our ear when others yawn....thats it.....

Here Are Some Quick Did You Know Facts On Yawning: Reading about yawning will make you yawn. Yawning is contagious. Seeing someone yawning will make you yawn too, usually within five minutes. Most yawns occur during the hour before sleeping and the hour after waking. All animals yawn - fish, birds, snake, dogs, cats etc. Research has shown that at 11 week old fetuses yawn. The average duration of a yawn is about 6 seconds. Did you yawn while reading all of this? If you did, I hope it was not from boredom. I am yawning as this sentence is being written (YAWN).

I do know that when a room builds up in carbon dioxide, a lot of people in the room, the carbon dioxide causes you to become sleepy and you begin to yawn even if you are not tired. It would seem to me that yawning is the streching of the neck and head muscles in order for the veins to constrict and move blood more rapidly to the brain. So hypoxia of the brain or carbon dioxide would trigger it.

When I am very tired, I would yawn naturally. But, yawning is also infectious. When I see someone besides me gives a big great yawn, it will set me off too. I think yawning is good. It's like an exercise to our jaws and mouth muscles. Also, after yawning, I feel good.

yes i feel yawning is contagious...and it happens wen someone around u yawns..and i have read this in some article...but dont know the exact reason...may be because wen u see someon ywan...ur nerves feel lazy too..and it performs yawning...

I often wonder about this also. But it does seem when someone yawns others follow. I do not have the answer maybe someone else does . I would like to know the reason for this also. Good question.