We do talk verbally but our body does a great deal of talking too.Here's a basic primer to pick up body signals:

UNDERSTAND BODY LANGUAGE:
POSITIVE VIBES:

* Head up and looking straight-suggests a confident and positive approach.

* Sitting straight yet comfortably-implies an attentive and self-assured personality.

* Looking straight without glaring or staring-shows you are serious and attentive.

* Straight shoulders,arms resting on sides or on your thighs , legs uncrossed, pointing at the speaker- shows energy attentiveness and confidence.

* Well combed hair-if long tied or combed neatly implies neatness and a tidy approach.

NEGATIVE VIBES:

* Feet dragging-implies lazy attitude,unlikely to impress.

* Head down-suggests timidity, again not a positive impression.

* Drooping shoulders-could imply lethargy and weariness.

* Clumsy posture-implies the candidate is unfit for the posture.

* Weak handshake- implies meek and ineffectual personality.
 
* Shifty eyes-suggests nervousness or dishonesty.

* Arms crossed on chest-suggests a defensive stance.

* Feet crossed while standing-concealing something or defensive.

* Fidgeting-implies nervousness or lack of interest.

* Hands in pockets-implies you have something to hide.