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Whenever we feel drowsy or sleepy, we start yawning. Does yawning help us in anyway?

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asked Jan 23, 2018 in Science by Rohit Singh (61,782 points) ● 35 ● 134 ● 358
Whenever we feel drowsy or sleepy, we start yawning. Does yawning help us in anyway?

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answered Jan 23, 2018 by sameer (82,980 points) ● 5 ● 11 ● 38
selected Jan 27, 2018 by sarthaks
 
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During drowsiness, our breathing rate slows down. The lungs do not get enough oxygen from the air resulting in yawning. Yawning brings extra oxygen into the lungs and helps us to keep awake.

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