Biology, asked by Anonymous, 1 year ago

Why do we always yawn?

Answers

Answered by qansasiddiqua
22

Answer:

Researchers aren't exactly sure why yawning occurs, but common triggers include fatigue and boredom. ... Although excessive yawning isusually attributed to being sleepy or bored, it may be a symptom of an underlying medical problem. Certain conditions can cause a vasovagal reaction, which results in excessive yawning.

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Answered by narendramodi24519
1

Explanation:

Researchers aren't exactly sure why yawning occurs, but common triggers include fatigue and boredom. Yawns may also occur when you talk about yawning or see or hear someone else yawn. ... Certain conditions can cause a vasovagal reaction, which results in excessive yawning.

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