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Yawn Reflex: Here are the Causes and Functions

Yawn Reflex: Here are the Causes and Functions. The act of yawning is one that is familiar to us all. It is a reflexive action that occurs when we take a deep breath and then exhale with an open mouth. Despite being a common occurrence, the science behind yawning is still somewhat of a mystery. In this article, we will explore what we currently know about yawning, including its potential causes and benefits.