2006-10-30 19:34:59 · 8 answers · asked by ramesh_huria 1 in Science & Mathematics ➔ Biology
i also wanna know...good question !
2006-10-30 19:43:22 · answer #1 · answered by shweta - 3 · 0⤊ 0⤋
We can really put mathematics around yawning. However now I do not know exact equations for the same. I will search for the same. But the theory is like this. A person yawns whenever he is in need of extra energy. When one person yawns, he breathes a lot of air(which is enormous considering the fact that human lungs carry a lot of pressure while yawning) from surroundings. If another person is present nearby, he will see a drop in pressure. So, the other person experiences dip in oxygen intake, resulting decreased energy preparation in the body. So, he also needs to yawn to compensate the same.
2006-10-31 14:43:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
The yawn reflex is often described as contagious: if one person yawns, this will cause another person to "sympathetically" yawn.[3] The reasons for this are unclear; however, recent research suggests that yawning might be a herd instinct.[4] 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. This phenomenon has been observed among various primates. The threat gesture is a way of maintaining order in the primates' social structure. The contagion of yawning is interspecific, for example a human yawning in front of a pet dog can incite the dog to yawn as well. 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.
2006-11-02 11:57:04 · answer #3 · answered by Krishna 6 · 0⤊ 0⤋
Scientists (and everybody else) have known for decades that yawns are contagious, but they've never known why. Some think it's an unconscious mirror effect - someone yawns, you yawn in response almost like a reflex.
But the scientist Platek says he thinks it has to do with empathy. The way he sees it, the more empathetic you are, the more likely it is that you'll identify with a yawner and experience a yawn yourself.
In a recent study, Platek looked at contagious yawning in people with "high empathy," "low empathy" and everything in between. He found that higher empathy meant more yawn-susceptible and lower empathy meant more yawn-immune.
2006-10-31 03:45:49 · answer #4 · answered by young_friend 5 · 2⤊ 0⤋
most will say yawning is contagious . but it is not prooved.yaning is due to the Oxygen depletion in the brain , according to my point of view, as a result of oxygen depletion we yawn so suddenly plenty of air enter our body. so there ,the oxygen content of the air is reduced as a result the person being nearest to us will yawn automatically to get oxygen. Is it ok?
2006-10-31 08:56:20 · answer #5 · answered by NR 1 · 0⤊ 0⤋
Because yawns are contagious!
2006-10-31 03:44:27 · answer #6 · answered by Tammy 2 · 0⤊ 0⤋
Due to deficiency of oxygen.
2006-10-31 04:26:42 · answer #7 · answered by Meeto 7 · 0⤊ 0⤋
it is becoz our brain thinks that it need a oxygen for his body
2006-10-31 05:55:43 · answer #8 · answered by faizel 2 · 0⤊ 0⤋