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How do yawns work Why do we yawn I know it's because we are tired but what is the scientific reason to why we yawn?
Wiki User
∙ 15y ago
you are not breathing deeply enough so as a reflex to low but not lifethreatiningly low O2 levels yer body takes in more O2.
Wiki User
∙ 15y ago
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Do you yawn when you are tired?
yes when you are tired and your body is trying to stay awake it yawns
When a person is tired he yawns?
It's common sese man!
What does 1 and 2 and 3 yawns mean?
1 yawn means you are tired. 2 yawns means you need a nap. 3 yawns means you need to go to sleep.
Why do you think we yawn when we are sleepy or drowsy?
your body yawns because it needs more oxygen, when we get tired that's when the body gets low on oxygen
Do you get drowsy if some one yawns close from you?
I don't know about "drowsy" but I have heard that if someone near you yawns, you yawn too. Like yawns are contagious. Yawns don't mean that you're tired. It also means that you're not getting enough oxygen, but that has not been scientifically tested.
When does a dog yawn?
A dog is like a human , it yawns when it is tired or about to go to sleep! :D It also yawns as a sign of disapproval, or when it is stressed, and needs to calm itself down.
Do you yawn when you are tired?
yes when you are tired and your body is trying to stay awake it yawns
When a person tired he yawns?
It's common sese man!
When a person is tired he yawns?
It's common sese man!
What does 1 and 2 and 3 yawns mean?
1 yawn means you are tired. 2 yawns means you need a nap. 3 yawns means you need to go to sleep.
Why do you think we yawn when we are sleepy or drowsy?
your body yawns because it needs more oxygen, when we get tired that's when the body gets low on oxygen
Do you get drowsy if some one yawns close from you?
I don't know about "drowsy" but I have heard that if someone near you yawns, you yawn too. Like yawns are contagious. Yawns don't mean that you're tired. It also means that you're not getting enough oxygen, but that has not been scientifically tested.
When a dog yawns what does that mean?
Same thing as when you yawn..... When you get tired you get a shortness of breath causing you to yawn...you yawn to catch your breath when your tired...
Why do you yawn so much?
we yawns o much because of lack of oxygen in our bodies. If you are sititng in class for example, and you yawn, its not becasue you are tired, it is becasue you donthave much oxygen in your body . :)
Do dogs yawn?
Yes they do. Our pup yawns all the time. She must be tired from her day of laying around, eating, and chasing her tail.
Why are yawns not contagious?
Actually that is a lie. Yawns are contagious.
Why do you yawn when you are tired?
When someone is tired, he or she yawns to increase the oxygen content in the blood. The blood is then carried to the brain which increases alertness or in other words wakes you up.Fun Fact! All animals can yawn!When sleepy or tired, you yawn to increase the oxygen content in the blood. The blood is then carried to the brain for increased alertness.
