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What do you call the mental ability to capture someone's attention like this?

I've noticed that when I'm in a crisis, some people who I'm taking to will have a hypnotic look with wide-open eyes and start balancing their bodies back and forth like attractive and repulsive forces. What is that? I noticed this twice, but only in my adult life, but I don't know if it's me or them. I think it was both of us, but what is it?

Public Comments

1. body language?