"Body language refers to the nonverbal signals that you use to communicate your feelings and intentions. It includes your posture, your facial expressions, and your hand gestures.
The ability to understand and to interpret body language can help you to pick up on unspoken issues, problems or negative feelings that other people might have. You can also use it in a positive way to add strength to your verbal messages.
Negative body language includes:
Folded arms.
Tense facial expression.
Body turned away from you.
Poor eye contact.
Positive body language includes:
Open body position (arms unfolded).
Upright posture.
Relaxed and open facial expression.
Arms hanging relaxed by the sides.
Regular eye contact."