2006-12-20 08:51:47 · 13 answers · asked by aligrespeq 3 in Health ➔ Other - Health
i don't know but when i read your question i started yawning and i just did again. IoI
2006-12-20 08:57:46 · answer #1 · answered by Anonymous · 0⤊ 1⤋
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. Larger groups produce more carbon dioxide, which means our bodies would act to draw in more oxygen and get rid of the excess carbon dioxide.
2006-12-20 16:57:17 · answer #2 · answered by needtheinfo 3 · 0⤊ 0⤋
Because we THINK it is contagious. If you don't believe it, you won't be affected by others yawning.
2006-12-20 16:59:35 · answer #3 · answered by sbt3pephd 2 · 0⤊ 0⤋
Did you ever read that Dr. Seuss book "The Sleep Book?" My dad tried to read it to us when we were kids and we would all fall asleep from yawning! It's a lot of fun once in a while.
2006-12-20 17:03:55 · answer #4 · answered by Anonymous · 0⤊ 0⤋
there was a MythBuster's episode about this. They found that it's actually not contagious, but more the power of suggestion.
2006-12-20 16:54:33 · answer #5 · answered by me 2 · 0⤊ 1⤋
I believe a lack of oxygen.
2006-12-20 16:59:57 · answer #6 · answered by Redda 6 · 0⤊ 0⤋
"YAWNING" AS WE SPEAK.... Perhaps the word alone causes it?
2006-12-20 17:09:47 · answer #7 · answered by dirk diggler 1 · 0⤊ 0⤋
Weird huh?
2006-12-20 16:53:45 · answer #8 · answered by Anonymous · 0⤊ 1⤋
Noone really knows http://www.world-science.net/exclusives/050309_yawnfrm.htm
http://www.yesmag.bc.ca/Questions/yawn.html
2006-12-20 16:56:19 · answer #9 · answered by Caleigh 5 · 0⤊ 0⤋
im getting very sleepy..
2006-12-20 17:01:04 · answer #10 · answered by SDChargedXLI 2 · 0⤊ 0⤋