Body language can convey the emotions in the best possible manner. The entire body is involved in hiding or showing your mental state of mind. Key signals of your emotions can be stated by your bodily gestures. It is also an ancient form of communication, which helps to express your emotions. Body gestures sometimes have a greater impact than verbal communication. Discomfort and comfort signals both can be conveyed by body gestures.
It is difficult to maintain eye contact all the time but eye contact can tell the comfort level of the person. Suppose you are not comfortable with someone, you will avoid his eye contact and look everywhere else, but not the person interacting with you. Sometimes, if a person is telling lies or has done something wrong, he will not look into your eyes or he is not interested in you, as he is not confident in facing you. So eye contact is a common body gesture of discomfort.