Science, asked by Ananya00113, 9 months ago

why do we e yawn when we are sleepy or drowsy

Answers

Answered by anusy2850

Answer:

When we are sleepy or feel drowsy, we yawn because our brain cells lack sufficient amount of oxygen. The deep breath associated with yawning helps us to drawn in more oxygen and supply the much needed oxygen to the tired body organs including the brain..

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