2006-10-20 21:46:16 · 10 answers · asked by malcom c 1 in Health ➔ Men's Health
something to do with body needing more oxygen
2006-10-20 21:47:39 · answer #1 · answered by Anonymous · 0⤊ 0⤋
We yawn because by taking a deep breathe in we are intaking a large amount of oxygen that our bodies think will therefore help us wake up.
I don't know why you are yawning when you are not tired, my guess is that, although you don't feel it, you must be sleepy and your body isn't fully awake.
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2006-10-20 22:16:39 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It is a negative feedback mechanism of the body from lack of oxygen in the body tissues thus we yawn to get more oxygen from the environment.
2006-10-20 23:15:16 · answer #3 · answered by maconsolviaa 5 · 0⤊ 0⤋
i think a lot of it is boredom i know when i'm not bored i very rarely yawn but when i am bored io start to yawn more
hope this helps
2006-10-21 00:25:59 · answer #4 · answered by Anonymous · 0⤊ 0⤋
A yawn is an involuntary muscular spasm. Hope this answers your question.
2006-10-20 21:54:41 · answer #5 · answered by may o 2 · 0⤊ 0⤋
2 reasons - physically - we need more oxygen. Psychologically -it is a signal to others around us that it is time to slow down and chillout -that's why yawning is 'infectious!'
2006-10-20 21:47:45 · answer #6 · answered by rose_merrick 7 · 0⤊ 0⤋
all yawning is, is a lack of oxygen
2006-10-20 23:46:43 · answer #7 · answered by don't mind me 2 · 0⤊ 0⤋
Changes in pressure
2006-10-20 21:48:05 · answer #8 · answered by Jez 5 · 0⤊ 0⤋
lack of oxygen and some kind of reflex reaction
2006-10-22 02:57:23 · answer #9 · answered by Sara 2 · 0⤊ 0⤋
because you are bored
2006-10-20 21:51:40 · answer #10 · answered by tan c 1 · 0⤊ 1⤋