an example: 10% of your communication is your conversation, 90% is voice tone, speed of speech and body language.

1-Head movements

Leaving your head forward is the first sign of lack of self-confidence. It is possible to make a shy comment for the people who bow in front of a compliment.
Touching the ears or pointing at the ear can be a sign of instability.
The slight leaning of the head is a sign of being related to a subject or person. (15 degree)
The 40 degree bow of the head can be a sign of sympathy.
During a bad appraisal, we can often observe that the assessor closes his eyes or has a slight touch on his nose.
Shaking the head as an acknowledgment sign usually includes a positive message, indicating that the listener is interested in the subject and that the attention is spoken.
However, shaking the head constantly by "connecting to the automation" is an indication that the listener has lost interest.
Touching the burn may be a sign that doubt or an idea may be rejected.
Tightening the jaw by hand can be a sign of arrogance.

2-Upper body

It is a sign of strength and courage to throw back the shoulders.
The arms are open, indicating that the person is comfortable and is open to talking / communicating.
Arresting the arms may indicate that the person is defending and is not satisfied.
Joining the arms behind the neck is also a sign of interest.
It means "I think / think of this issue" as the hands are tied together or the fingers touch each other.
Putting the hand in the belly may mean "I am ready and willing" or it may be an aggressive sign.

When we remember a memorial, we look at the upper right corner.
Looking upwards shows that someone is thinking.
When we feel we've been underestimated, we cut off the eye contact.
Directing the eyes down may include the message of fear, guilt, or submission.
When you are anxious or evaluating others, your eyes are more susceptible to breaking fast.
Large eyes create perception that a person is more concerned with the subject or person.
It is a common reaction to look sideways in the face of someone else's uncomfortable comment.

If interest comes, there will be a much more comprehensive article.