I will blush at times when I'm embarrassed for somebody, like for example say someone tries to stand on their head and they fall flat on their face or something, I might blush if there's a crowd around. I guess that's what you might call a heightened sense of empathy or sympathy or something. But if you wanna get all 50 shades of grey in your interpretations of people's physiological responses, more power to you. It certainly sells product. Like headlines.