11 diseases which yawning tells about

Sometimes it’s more serious than just fatigue.
Yawning is an involuntary reflex during which the mouth opens wide and a deep breath occurs. This is the most common physiological phenomenon that allows you to cool the brain, helps to concentrate and signals the need for rest. Often a reflex also arises as a result of empathy or the so-called “chain reaction”: when we see a yawning or read a text about this phenomenon, we ourselves certainly want to yawn.

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