Why Do We Yawn?
Автор: SciShow
Загружено: 2014-04-15
Просмотров: 457765
Описание:
Why do we yawn? If you think the answer is BOR-ing, then maybe your brain's just overheated. Let Hank explain the new thinking behind why we ... hold on ... *yawn*. Excuse me.
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Sources:
http://www.upenn.edu/gazette/1109/exp...
http://news.nationalgeographic.com/ne...
http://www.nytimes.com/2007/07/03/hea...
http://serendip.brynmawr.edu/exchange...
http://www.loc.gov/rr/scitech/mysteri...
http://www.smithsonianmag.com/science...
https://www.princeton.edu/main/news/a...
http://www.psychologytoday.com/blog/b...
http://www.epjournal.net/wp-content/u...
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