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However, in some cases, extra yawns can flag something more serious, like a vasovagal syncope (a sudden drop in blood pressure and heart rate that leads to fainting), neurological conditions like ...
The medical problems that are direct consequence of high altitude are caused by the low inspired partial pressure of oxygen, which is caused by the reduced atmospheric pressure, and the constant gas fraction of oxygen in atmospheric air over the range in which humans can survive. [1]
Merely thinking about or seeing someone yawning can make you yawn. But why?
Rainy weather can make you sleepy, but the reason behind that feeling is actually pretty scientific. We break down the changes your body goes through before a storm, including how it reacts to ...
Yawning is considered a non-respiratory gas movement. A non-respiratory gas movement is another process that moves air in and out of the lungs that do not include breathing. Yawning is a reflex that tends to disrupt the normal breathing rhythm and is believed to be contagious as well. [14] The reason why we yawn is unknown.
In budgerigars, contagious yawning does not seem to be related to social closeness. In certain neurological and psychiatric disorders, such as schizophrenia and autism, the patient has an impaired ability to infer the mental states of others. In such cases, yawn contagion can be used to evaluate their ability to infer or empathize with others.
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A pressure of 6.3 kPa—the Armstrong limit—is about 1/16 of the standard sea-level atmospheric pressure of 101.3 kilopascals (760 mmHg). At higher altitudes water vapour from ebullism will add to the decompression bubbles of nitrogen gas and cause the body tissues to swell up, though the tissues and the skin are strong enough not to burst ...