2006-08-28 06:19:53 · 11 answers · asked by Anonymous in Health ➔ Mental Health
We yawn because our bodies are lacking oxygen. They are contagious because when your brain sees someone else that "needs more oxygen" it says "Hey - I need more oxygen too!"
Just thinking about it makes me yawn...
2006-08-28 06:23:04 · answer #1 · answered by Anonymous · 0⤊ 0⤋
yea its lack of oxygen
cuz when ur tired and ur still up late at night ur body yawns because it needs more oxygen so u can stay awake.
2006-08-28 13:26:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You are not getting enough oxygen to your brain, or it can also be that it helps you warm up when your are cold. Interesting huh!
2006-08-28 13:22:12 · answer #3 · answered by Susa 3 · 0⤊ 0⤋
Boredom and not enough oxygen in the brain!
2006-08-28 13:25:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I could probably Google up an answer, but I think it has to with the diaphram "stretching".
2006-08-28 13:21:56 · answer #5 · answered by partlycloudy 2 · 0⤊ 0⤋
Tiredness lol
2006-08-28 13:21:46 · answer #6 · answered by CLOCKWORK 6 · 0⤊ 0⤋
boring lecture!
oh and it's contagious
2006-08-28 13:22:35 · answer #7 · answered by hoi polloi 2 · 0⤊ 0⤋
tiredness
2006-08-28 13:24:38 · answer #8 · answered by Anonymous · 0⤊ 0⤋
it's contagious that's all I know
2006-08-28 13:21:57 · answer #9 · answered by Han Solo 3 · 0⤊ 0⤋
LACK OF OXYGEN.
2006-08-28 13:21:38 · answer #10 · answered by Anonymous · 0⤊ 0⤋