Benefits of Non Verbal Communication in different professions

Teaching

Teachers who make eye contact open the flow of communication and convey interest, concern, warmth and credibility.
Smiling is often contagious and students will react favorably and learn more.
A lively and animated teaching style captures students' attention, makes the material more interesting, facilitates learning and provides a bit of entertainment. Head nods, a form of gestures, communicate positive reinforcement to students and indicate that you are listening.

Speaking with your back turned or looking at the floor or ceiling should be avoided; it communicates disinterest to your class.
move around the classroom to increase interaction with your students. Increasing proximity enables you to make better eye contact and increases the opportunities for students to speak.

Managers/Leader

To inspire, co-ordinate staff managers need to know what employees think. And there is less probability to get answer in two-way feedback session.
An ability to read and understand the non verbal indicators or body language is valuable if managers want to find out what’s really going on behind their team members’ polite smiles.

Effective non verbal communication brings trust and support of team members.
In fact, some of the most success modern business persons today have worked with speech coaches to not only improve their verbal communication but also the manner and mechanisms they use to deliver verbal content, in other words their non verbal communication.