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Yawning after another person is just the power of suggestion. It's your mind taking a hint from another person. It's the same as someone suggesting pizza for lunch and then all of
http://answers.ask.com/Health/Diseases/why_do_we_y...
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While the biological reasons for spontaneous yawning are still vague, current research by Atsushi Senju and others suggests that "contagious yawning"---yawning stimulated
http://www.ehow.com/facts_5055048_yawn-someone-els...
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The latest study states we yawn when we see someone else yawning because of
http://www.chacha.com/question/why-when-we-see-som...
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The latest study states we yawn when we see someone else yawning be...
http://www.chacha.com/question/why-do-we-yawn-when...
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