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Wikenigma - an Encyclopedia of Unknowns Wikenigma - an Encyclopedia of the Unknown Wikenigma - an Encyclopaedia of Unknowns Wikenigma - an Encyclopaedia of the Unknown

Blushing

“… the most peculiar and most human of all expressions.” - according to Charles Darwin.

Blushing is the temporary reddening of a person's face due to (apparently specialised) blood vessel dilation mechanisms. It is normally involuntary and triggered by emotional stress, such as that associated with embarrassment, anger, or romantic stimulation.

It has been suggested that blushing and flushing are the visible manifestations of the physiological rebound of the basic instinctual fight/flight mechanism, when physical action is not possible.

However, no exact mechanism or evolutionary advantage has been determined.

More info : wikipedia


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