Impunity wrote:josiah33 wrote:Stolen from somewhere on the internet....
Quote:
Yawning results due to a sudden decrease of oxygen in the blood and lungs. This can occur when we are tired, but it also occurs when our blood sugar level is low. When the level is low, a sudden burst of oxygen will be required to produce energy. This decreases our oxygen levels, causing us to yawn.
Yawning is also believed to be induced when the level of glucose supplied to the brain decreases, as in the state of hunger.
Keyword is still believed.
But thanks for the post.
Now whenever I feel yawning coming I will lick some sugar.
Science’s most baffling questions? Why we yawn
Does this picutre make you yawn?
yawning helps to pump cerebrospinal fluid around the brain, which could trigger a shift in neural activity.
yawning might help to chill the brain and stop it overheating.
yawning – and perhaps other bodily functions, like sneezing – shares some strange parallels with sex. certain anti-depressants can lead some patients to orgasm during a yawn – a rare side effect that could quickly lose its appeal.
Does infectious yawning ensure that we all go to bed at the same time?
warning-this-may-make-you-yawn
http://www.bbc.com/futur...-this-may-make-you-yawn