2006-06-22 06:24:19 · 8 answers · asked by nippy115 2 in Health ➔ General Health Care ➔ Other - General Health Care
It gets oxygen to your brain. More than just being tired
2006-06-22 06:28:21 · answer #1 · answered by MERILEI 2 · 0⤊ 1⤋
when ur tired, u dont get enough oxygen, so u yawn to get more oxygen
2006-06-22 13:27:24 · answer #2 · answered by aaa 1 · 0⤊ 0⤋
because we feel tired and sleepy. some people yawn a lot just to convey that they are getting bored.
2006-06-22 13:29:46 · answer #3 · answered by rajeshwari 3 · 0⤊ 0⤋
Because your body needs some extra oxygen.
2006-06-22 13:27:53 · answer #4 · answered by Brandy 3 · 0⤊ 0⤋
lack of oxygen to the brain
2006-06-22 13:27:09 · answer #5 · answered by AMY L 4 · 0⤊ 0⤋
gets more oxygen to the brain when your tired
2006-06-22 13:29:23 · answer #6 · answered by Martine 1 · 0⤊ 0⤋
because we're slleppy or because we dont breath right and we lack oxygen.
2006-06-22 13:27:38 · answer #7 · answered by metafrastria 4 · 0⤊ 0⤋
to fullfil our oxygen needs
2006-06-22 13:41:50 · answer #8 · answered by niky 1 · 0⤊ 0⤋