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Why humans yawn?

Updated: 6/22/2024
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Wiki User

13y ago

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Because when you get sleepy your body goes into a sleep mode and takes in less air but since your awake and need more air you yawn to get 'emergency' air. Hope that helped

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Wiki User

13y ago
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AnswerBot

5mo ago

Yawning is believed to help regulate the temperature of the brain, increase alertness, and potentially serve a social bonding function. It may also occur in response to tiredness, boredom, or as a reflexive response to seeing others yawn.

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Q: Why humans yawn?
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