Why do humans have the biological need to blush?

Philippines
March 13, 2007 10:00pm CST
can you explain this?
1 response
bjone6
@bjone6 (348)
• United States
14 Mar 07
I wish I could turn it off. I don't embarass easy but when I do, it's all over. My ears get red and my face turns all sorts of colors of red. I start to get warm in the face and everything.
1 person likes this