9 Body Signals That Can Help You Read a Person Like an Open Book

I listen to a person's voice an look at their face, sometimes when someone is nervous and lies, their voice shakes and they get sweaty

I also use some of these tricks to check the person, to see whether the person is comfortable talking to me or being in this company, and stuff. In 100% of the cases they work :)

I check the person's blinking. People often blink more rapidly when they are feeling distressed or uncomfortable. Infrequent blinking may indicate that a person is intentionally trying to control his or her eye movements.

As for me, I'm not so good at understanding the feelings of another person, I'm a simple guy. This article is useful for me! Thanks for sharing.