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Why is yawning contagious?

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Why is yawning contagious?

Yaaawwwwwn* Did just reading the word make you feel like yawning yourself? Known as contagious yawning, the reasons behind this phenomenon have been attributed to both the physiological and psychological.

It`s been observed in children as young as four and even in dogs! Claudia Aguirre visits the many intriguing theories that might explain contagious yawning.

Date
2016.06.26 / 12:13
Author
Axar.az
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