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Yawning
Yawning is a the act of taking a deep involuntary breath. There are several theories about why people yawn, but no one knows the exact cause.
471 Questions
Why does a toddler yawn while sleeping?
They yawn for the same reason that you do, too much carbon dioxide in the body. Yawning is the body's was of releasing the excess gases.
None ! Yawning is either the body signalling you're tired, or that you're short of oxygen. Nothing to do with muscles !
Yawning too much can prove to be fatal. My aunt didn't sleep for a week, kept yawning, and died. You're in trouble
I'm still having the same problem but it lasts for half a minute and I've been told by a doctor the reason for this pain is gas that cause by food and soft drinks.
How many times do you yawn per day?
Most people yawn about average of 3-5yawns per day... Still Not Confirmed ...
they say its due to a lack of oxygen to the brain....it happens to me as a result of me being around air conditionin
Well I always yawn when I'm tired, it gives me more energy but it makes me sleepy or when you se someone else yawning constantly!-Icelopbunny
Why do you yawn when you are sleepy?
You yawn when you are sleepy because that is when you take in the least oxygen. Your body takes in more oxygen when you are yawning, which explains the reason to why you take in air when you yawn.
A yawn (from the Middle English yanen, an alteration of yonen or yenen, which in turn comes from the Old English geonian[1]), is a reflex of simultaneous inhalation of air and stretching of the eardrums, followed by exhalation of breath. Pandiculation is the term for the act of stretching and yawning simultaneously.[2] Yawning is associated with tiredness, stress, overwork, lack of stimulation, or boredom. Yawning can also be a powerful non-verbal message with several possible meanings, depending on the circumstances. In humans, yawning has an infectious quality (i.e., seeing a person yawning) or just thinking of yawning, can trigger yawning which is a typical example of positive feedback.[3] Infectious yawning has also been noted in chimpanzees. There are a number of theories that attempt to explain why animals yawn.[4][5] It is likely that there are a number of triggers—not just one—for the behavior. However, there are a few select theories that attempt to explain the primary evolutionary reason for the yawn. None of them have been entirely substantiated, but there are two that many scientists now believe are likely contenders to be the primary trigger for animal yawns. The first states that yawning occurs when one's blood contains increased amounts of carbon dioxide and, therefore, becomes in need of the influx of oxygen that a yawn can provide.[6] Researchers believed this theory to be true for years, but studies have actually shown that it's either incorrect or, at the very least, flawed. [7] Yawning may, in fact, reduce oxygen intake compared to normal respiration, not increase it.[8] The second notion, which has become the most widely accepted among the theories, states that yawning is the body's way if controlling brain temperature.[9] The process cools off your brain, much like a fan cools the inside of a computer.[10] Another speculated reason for yawning is the desire to stretch one's muscles.[11] Nervousness has also been suggested as a possible reason. There have been studies that suggest that yawning, especially for psychological reasons ("contagious" yawning), may have developed as a way of keeping a group of animals alert.[12] Anecdotal evidence suggests that yawning helps increase the state of alertness of a person—paratroopers have been noted to yawn in the moments before they exit the aircraft.[13]
yawning is contagious only if someone sees you do it ... as a sort of social action.
It is not contagious in the disease sense.
The physiologic function of yawning is to relieve the imbalance between where the blood flows in the lungs (mainly at the base) and where the air flows (mainly at the apex). Note that this is a problem mostly when you are in an upright posture.
Yawning is contagious, at least to humans. Many animals yawn, but only dogs, chimps, and humans are known to yawn after someone else does. There is no conclusive evidence why we yawn to begin with, but it's possible that contagious yawning may have something to do with social bonding and empathy. For example, autistic people tend not to yawn after another person does, and children under the age of four don't do it either. This suggests that yawning after someone else is a sympathetic and social act, similar to unconscious mimicking.
When tired, yawning is psychologically "contagious", but not physically contagious in the most common sense of the word.
Dogs yawn as a way to calm themselves when they are stressed. An agility dog (dog that does agility tricks) will often yawn just before he does his run as a way to "stretch", or loosen himself up before doing his run.
If you have a dog that yawns during obedience classes, it indicates a need for him to be there, and over time he will become less stressed and more relaxed and you will find him yawning less and less. Dogs and other mammals (and some non-mammals) yawn for the same reason that people do: it is a reflexive action due to a lack of oxygen in one's system (most people breathe more slowly when they are tired or bored, which causes a lack of oxygen, which then causes yawning).
Is constant yawning related to cocaine withdrawal?
Yes, constant yawning can be a symptom of cocaine withdrawal. Yawning is a common withdrawal symptom associated with stimulant drugs like cocaine due to changes in brain chemistry. It is important to seek professional help to manage withdrawal symptoms and address substance use disorder.
Is it normal for eyes to water when you yawn?
It is quite normal for the eyes to water when a person yawns. The muscle contractions in the face and jaw squeeze the area around the tear ducts.
When we are sleepy or drowsy then our lungs don't take enough oxygen which increases carbon dioxide in our body. The brain senses this and sends us a messages that causes us to yawn.
By Akhilesh Sharma
Yawning is believed to help regulate the temperature of the brain, increase alertness, and potentially serve a social bonding function. It may also occur in response to tiredness, boredom, or as a reflexive response to seeing others yawn.
