People need realness, reality. People can sense when someone is being pretentious or fake. It's because you feel it; you see it in someone's body language.

I see tendencies, I see body language.

In a costume, you need very exaggerated body language - as you say, sort of mime-type skills.

Action & bodylanguage of a person will tell you every thing you need to know.

We were playing like we were down by 40 in the first half. Our body language was like we weren't going to win. We didn't let up when they made a run; we stayed poised, and made a basket when we had to.

I didn't like the aura of our body language on the court. We seemed that we were getting defeated, and even though the game was a large margin, we didn't play smart basketball. We're just trying to get these guys to understand that's not how you go out.