What is the chemistry behind yawning?Is it a sign of fatigue or a bio mechanical response to an external stimuli?what kind of benefit can we get from yawning?
Everybody say we yawn because the brain lacks oxygen.But is it possible to get more oxygen to brain by yawning?I have experienced yawning while I'm running or doing exercise.
2007-02-13 15:46:11 · 6 answers · asked by rohanadh 1 in Social Science ➔ Psychology
Someone else yawning.
Yawning is an involuntary action that causes us to open our mouths wide and breathe in deeply. We know it's involuntary because we do it even before we are born. 11-week-old fetuses yawn
Many parts of the body are in action when you yawn. First, your mouth opens and jaw drops, allowing as much air to be taken in as possible. When you inhale, the air taken in is filling your lungs. Your abdominal muscles flex and your diaphragm is pushed down. The air you breath in expands the lungs to capacity and then some of the air is blown back out.
While the dictionary tells us that yawning is caused by being fatigued, drowsy or bored, scientists are discovering that there is more to yawning than what most people think.
The Physiological Theory -- Our bodies induce yawning to drawn in more oxygen or remove a build-up of carbon dioxide. This theory helps explain why we yawn in groups.
The Evolution Theory -- Some think that yawning is something that began with our ancestors, who used yawning to show their teeth and intimidate others
The Boredom Theory -- In the dictionary, yawning is said to be caused by boredom, fatigue or drowsiness. Although we do tend to yawn when bored or tired, this theory doesn't explain why Olympic athletes yawn right before they compete in their event. It's doubtful that they are bored with the world watching them.
2007-02-13 15:52:52 · answer #1 · answered by Noor al Haqiqa 6 · 0⤊ 0⤋
From what I understand, it is our bodies trying to increase our oxygen intake. Yawning makes u basically take one huge deep breath, and you get almost a clear headed feeling after you yawn. Its almost like a natural caffeine fix lol
2007-02-13 15:50:53 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Primarily the home shopping network, but frequent "yawning" has been reported relativly often during or following such ordeals as (work related) "team meetings", "chick flicks" and even "daytime television".
2007-02-13 15:58:15 · answer #3 · answered by Anonymous · 0⤊ 0⤋
We yawn to get more oxigen to our brains
2007-02-13 15:49:55 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I was told by a teacher that it is to open up the air exchange pockets in our lungs called aveoli.
2007-02-13 16:17:48 · answer #5 · answered by Tumbleweed 5 · 0⤊ 0⤋
boredom
2007-02-13 16:08:35 · answer #6 · answered by Da Mick 5 · 0⤊ 0⤋