These body languages will let you know the state of person with whom you are interacting.
Folded arms
Indicates a cold or flat behavior
Shaking legs
Signals anxiety, irritation or both
Expanded handed in authoritative manner
Indicates they are leader or trying to convince in a better way
Openly laughing
A desire for a relationship, be it a friendship or romantic
Crossed leg
Signals the person is less interested in negotiating with other. A sign of resistance!
Expanded and aggressive posture
Indicates a sense of achievement!
Looking at someone in the eyes
Holding eyes open for too long without blinking
Raised eyebrow
Wrinkles on face while smiling
Smrutirekha