What does Blushing mean?
Blushing is an involuntary action, which means you have no control over it. When you are in a situation where you are embarrassed, your body immediately releases adrenaline. This adrenaline hormone is responsible in creating the fight or flight response in your body. It speeds up your breathing, causes your pupils to grow bigger and increases your heart rate. Simply put, it prepares your body to be prepared to run from danger.
Adrenaline makes your blood vessels dilate to improve the blood flow and ensure that oxygen is delivered to organs. A chemical transmitter called adenylyl cyclase signals the veins in your face to dilate. When they do, more blood flows into your cheek veins, thus causing the red face and a warm cheek- in short, you blush!