Why yawning is no insult... it's a sign that someone really cares

This is the theory of Italian researchers who observed more than 100 men and women from four continents as they went to work and sat in waiting rooms.

Source: http://www.dailymail.co.uk/sciencetech/article-2071326/Why-yawning-insult--sign-really-cares.html?ITO=1490

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