This is a question that goes out to all the NT's out there.
Anyway, I was thinking a bit about myself and everyone else's physical behaviour in general. When ever I find myself in a social situation ergo not by myself I tend to fake facial expressions to fit in with the mood or tune of the conversation in order to please the person I'm having a interaction with. Because I find that my ordinary face will be seen as discourageing and or depressing to anyone else than me.
Does anyone else act like this as well? And if you do what is your motivation to do so.