Why people yawn when they are sleepy? Are there any biological reasons behind yawning? 614 viewsJanuary 1, 2024 Question98.78K May 24, 2023 0 Comments Why people yawn when they are sleepy? Are there any biological reasons behind yawning? In: 299 26 Answers ActiveNewestOldest Anonymous Posted May 24, 2023 0 Comments mostly to intake more oxygen amd make our body less tired. it is also an evolutionary social gesture. I read somewhere that we tend to follow up a yawn of a friend/family more than a stranger. I did noticed this later on few occasions. You are viewing 1 out of 26 answers, click here to view all answers. Register or Login
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