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Stats: 1,863,342 members, 3,736,870 topics. Date: Sunday, 20 August 2017 at 06:24 PM
|Why Do We Yawn? by 9jamum(f): 11:22am On Nov 26, 2011|
Is it because one is being tired, bored or oxygen deprived, or low temperature of the brain?
What is excessive yawning?
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