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so that more oxygen can come in easier.

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17y ago
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5mo ago

Opening the mouth wide during a yawn allows for maximum air intake, which helps to replenish oxygen levels in the body and regulate carbon dioxide levels. It also stretches the jaw muscles and stimulates blood flow to the face, helping to increase alertness.

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Q: Why do you open your mouth so wide when you yawn?
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What happens in your body when you yawn or swallow?

When you feel sleepy, you yawn. When you feel bored, you yawn. The kid next to you yawns. You yawn, too--even if you are wide awake and having a good time. So why are you yawning? Let's check it out. Your body needs oxygen. You get oxygen by breathing in air. Your body also needs to get rid of carbon dioxide. When you breathe out, this carbon dioxide is carried out of your body. Your brain makes sure you have the right amount of oxygen and carbon dioxide in your body. If you have too much carbon dioxide in your body, your brain tells your mouth to open. It tells your throat to tighten. And it tells your chest to take a deep breath. In other words, your brain makes you yawn. Oxygen rushes in. Carbon dioxide rushes out.


Why do other people yawn when you yawn?

Well, in my science class this old dude was experimenting that. Someone yawned on stage and 55% of the audience yawned too. When he noticed that he started experimenting. He thought it might be the way your mouth moves when you yawn, so he made a video clip of a persons mouth yawning and played the sound affect of a yawn, but then only 5% of the people yawned. So, no one actually knows why. This guy also experimented other things about yawing, but never found his answer.I read in a book it was a group thing for you to tell the group you're tired and everyone to have a rest. See the book why is snot green.


Why can dogs swim with there mouth open?

a dog keeps its mouth open when it is hot to cool of some dogs don't get as hot as others so they keep there mouth shut


Why do many yawn when one yawns even out of sight?

Yawning is believed to be a social behavior, so when one person yawns, it may trigger a response in others due to empathy or subconscious mirroring. This phenomenon helps in building social bonds and synchronizing group behavior.


How come people yawn?

Yawning is a reflex that occurs in response to tiredness, boredom, or a lack of stimulation. It is believed to help increase oxygen intake and alertness. Yawning is also contagious, meaning seeing or hearing someone yawn can trigger a yawn response in others.

Related questions

How do you put a yawn into context?

:-0 a yawn is the stretching of the mouth, open wide action, smiling like a doughnut so to speak


Do rattle snakes eat rabbits?

yes they can there mouth muscles are so strong they could open there mouth that wide to eat a whole rabbit


How can you clearly speak Shakespeare's works?

open your mouth really WIDE so that you speak really clearly :)


Why does Demi Lovato open her mouth so wide when she sings?

she likes to sing loud or shes born like that


What helps a snake open its mouth so wide?

it has a bone that lets it open its mouth to a 90 degree angle and it stretches its jaw out because it isn't exactly atached the it pulls the food in with separate jaws


What happens in your body when you yawn or swallow?

When you feel sleepy, you yawn. When you feel bored, you yawn. The kid next to you yawns. You yawn, too--even if you are wide awake and having a good time. So why are you yawning? Let's check it out. Your body needs oxygen. You get oxygen by breathing in air. Your body also needs to get rid of carbon dioxide. When you breathe out, this carbon dioxide is carried out of your body. Your brain makes sure you have the right amount of oxygen and carbon dioxide in your body. If you have too much carbon dioxide in your body, your brain tells your mouth to open. It tells your throat to tighten. And it tells your chest to take a deep breath. In other words, your brain makes you yawn. Oxygen rushes in. Carbon dioxide rushes out.


Why is ben your bus driver so moody?

Because he is obese, ugly and although he never manages to open his mouth to speak im sure he can open it very wide to be the size he is now


How does a snake eat a rabbit?

The jaw of a snake is not attached to his skull. So he can open his mouth, incredibly wide. He doesnt chew, but swallows the rabbit whole.


How do you do high screams?

Just make it so you sound like you are clearing your throat hard. The open your mouth wide enough for the high scream to come out.


What does the smiley face XD mean?

It means they are smiling so hard wrinkles come out! XD laughing with eyes closed and mouth wide open /\


What happens when your mouth is open when you die?

As you die, your muscles relax, so your mouth falls open.


What does a baby do with an open mouth?

the respiratory system in a baby is not well developed and they do respire through mouth too, and so they keep their mouth open.