Whenever we feel drowsy or sleepy, we start yawning. Does yawning help us in anyway?
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Answered by
7
yawn comes when the brain gets heated up.
u can even feel the yawn if u even breathe in and breathe out.just the heat moves out
u can even feel the yawn if u even breathe in and breathe out.just the heat moves out
Answered by
34
When we are sleepy, then our brain cells lack oxygen. Yawning helps us to get a better amount of oxygen for our brain to function properly and that we do not get more tired.
Yawning usually happens when our brain cells lack oxygen......
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