3.Why do we yawn when we feel sleepy? Givereason? – InterviewSolution

InterviewSolution

1.	3.Why do we yawn when we feel sleepy? Givereason?
Answer» yawning allow us to quickly increase the amount of oxygen in blood. we will yawn while we feel sleepy because our brain cells lack sufficient amount of oxygen. So, we yawn to gather a large amount of oxygen for brain cells to function properly.

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