Complex sentence: This is the study of body movements, gestures, facial expressions as a means of communication, and it involves the space between individuals, the "proper" distance to be maintained (within contexts and relationships) and what happens when the boundaries are crossed.
Split into simpler sentences: This is the study of body movements, gestures and facial expressions as a means of communication. It involves the space between individuals, the "proper" distance to be maintained (within contexts and relationships) and what happens when the boundaries are crossed.