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None ! Yawning is either the body signalling you're tired, or that you're short of oxygen. Nothing to do with muscles !
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∙ 11y ago
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Why does yawning cause neck cramps?
hyperexcitability of the nerves that stimulate the muscles
Why does yawning cause cramps in neck?
hyperexcitability of the nerves that stimulate the muscles
When one student is yawning why do all the others start yawning?
The cause in not know.
Why is my moshimonster always yawning?
cause it is boared
Does yawning cause leg hair to grow?
No. Yawning does not cause leg hair to grow. What does cause leg hair to grow (either thicker or darker) is shaving, genetics, and your overall hormones in your body.
Can yawning cause heart palpitations?
Um, I shouldn't think that yawning itself causes heart palpitations, but if you are extremely tired, there is more chance of you having a palpitation.
What is the cause of excessive yawning?
Excessive yawning can be caused by a vasovagal reaction. A vasovagal reaction is caused by the action of a nerve on the blood vessels. This nerve is called the vagus nerve. It may indicate a heart problem.
What causes yawns?
causing yawning can be because you are tired or did not get enough sleepThere are a number of theories that attempt to explain why animals and people yawn. It is likely that there are a number of triggers for the behavior. However, there are a few theories that attempt to explain the primary evolutionary reason for the yawn. None of them has been empirically substantiated.One study states that yawning occurs when one's blood contains increased amounts of carbon dioxide and therefore becomes in need of the influx of oxygen (or expulsion of carbon dioxide) that a yawn can provide.Yawning may in fact reduce oxygen intake compared to normal respiration However, neither providing more oxygen nor reducing carbon dioxide in air decreased yawningAnother speculated reason for yawning is the desire to stretch one's muscles. The tongue and throat are some of the most used muscles in the body, used for speech, breathing and swallowing. The need to stretch these muscles and refresh them arises just like in other muscles of the body, to circulate lymph. Yawns are often accompanied by the urge to stretch. Still another proposal points out that animals subject to predation or other dangers must be ready to physically exert themselves at any given moment. At least one study suggests that yawning, especially psychological "contagious" yawning, may have developed as a way of keeping a group of animals alert
Why is yawning not contagious to people with autism?
Yawning is not a disease.
Is yawning rude?
if rude and yawning are defined as such i don't see any reason why the act of yawning be rude. yawning is physiologic. would urinating and defecating be rude also?
Can yawning make you sick?
Yawning too much can prove to be fatal. My aunt didn't sleep for a week, kept yawning, and died. You're in trouble
What is the benefit in yawning?
Yawning is actually putting out (?) the stress in your body, so it is a good thang...
