We can communicate not only through words but also through body language. Body language includes our posture, facial expressions, and gestures. Because body language is so important, you’ll want to know what yours is saying and how to interpret other people’s, too. Here are some examples of body language and its meaning. If your posture is slumped and your head is down, this could mean that you are sad or you lack confidence. If your posture is straight but relaxed, you are expressing confidence and friendliness.