Do you tend to turn pink or very red when you’re embarassed? Craig Benzine of Mental Floss (previously) explains that blushing is a flight-or-fight response and comes from the sympathetic nervous system. When you become embarrassed, you may notice that your breathing and heart rate changes because your body is reacting in a similar situation where you to fight-or-flight. What is the exact reason for your cheeks turning red and what’s the reason for blushing? Keep watching as Craig explains.
Source: Mental Floss