https://www.quora.com/What-are-some-cool-body-language-tricks-to-use-on-people

As a student of human cognition and behavior… I tend to observe body orientations and other gestures very closely. This is an interesting small collection of noticings, but the topic goes far deeper:

“Tricks to use on people” is a phrase denoting the intent to deceive. I am primarily interested in observation, not deception.