Yawning serves as a physiological mechanism to cool the brain and maintain alertness by bringing in cool air and increasing blood flow, while contagious yawning may be linked to empathy, as even hearing the word 'yawn' can trigger the reflex.
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The REAL Reason You YawnUntitled designAdded:
Yawning may help [music] cool your brain and keep you alert.
When you're tired, your brain temperature rises.
>> [music] >> Yawning brings in cool air and increases blood flow.
And contagious yawning [music] may be linked to empathy.
Even hearing the word yawn can trigger it.
Follow for daily medical facts.
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