There are few explanations from scientific community foor the reason behind yawning. It is the lack of oxygen in our system that is replenished by making a big inhalation act known as Yawning.
But in my observation this occurs only when we have excessive calories in our body but not when you are asleep on an empty stomach.
So the act of Yawning is more related to excess of calorific value rather than oxygen slackness.
But in my observation this occurs only when we have excessive calories in our body but not when you are asleep on an empty stomach.
So the act of Yawning is more related to excess of calorific value rather than oxygen slackness.
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