Why do we blush when we get embarrassed or shy?

Why do we get red?Why do we blush when we get embarrassed or shy?
Blushing is a unique blend of evolutionary and social behavior. It's an involuntary reaction of the sympathetic nervous system, which is responsible for our ';fight or flight'; response, but blushing is solely triggered by social cues.


People generally blush when they're feeling embarrassed, scared, or stressed. As a result of the ';fight or flight'; response, the capillaries that carry blood to the skin widen, and the increased blood flow lends the face, as well as sometimes the chest, neck, or even the body or legs, a reddened color.





Excessive facial blushing, or erythrophobia, is caused by overactivity of the sympathetic nervous system. The condition can cause a lot of psychological duress and has engendered several support groups.





It's common knowledge that animals don't blush. So while there are some evolutionary cues behind blushing, it's also linked to something uniquely human -- moral consciousness





(author of ';Peace From Nervous Suffering';) says, ';a blush is caused by the nerves controlling the blood vessels in our face and neck becoming so startled by emotion - fear, anger, shame - that they suddenly release their grip and blood floods into the vessels.'; Trying NOT to blush makes it that much worse!Why do we blush when we get embarrassed or shy?
this physical reaction is caused by psychological causes that occur from naturally occuring biochemicals know as asters.
Blood travels too close the the outer layer of epidemis(skin) on ur face, thus red...