This document discusses non-verbal communication and its importance. It covers various categories of non-verbal communication including signs, symbols, body language, gestures, postures, facial expressions, paralanguage, proxemics, haptics, and olfactics. Effective non-verbal communication is important for managers to function as effective team leaders since team members express attitudes and feelings through non-verbal cues. Guidelines are provided for using non-verbal communication successfully, such as making eye contact, using open gestures, and avoiding excessive movements.