Our faces express our emotions. As emotions change, the facial muscles respond and create snapshots of the feelings. Following a few obvious clues to emotions that are given by facial muscles.

Strong emotions: Brow is tightened, eye lids are half-shut, mouth is stretched

Relaxed contentment: brows slightly raised, lips parted, eyes open and focused outwardly

Inner thought: eyes and head cast downward, jaws and neck muscles tightened

Joy: eyes contracted, upturned lips

Surprise: Brows raised and widened eyes

Anger:Lowered brows, thinned lips, clenched teeth and jaw

Based on "The Micro Expression Training Tool" developed by Paul Ekman, PH.D., a professor of psychology at the University of California Medical School in San Francisco. See more in his book, Emotions Revealed: Recognizing Faces and Feelings to Improve Communication and Emotional Life.