Communication laborates the importance
Let me tell you about a wrong practice when people communicate, instead of listening to what other person is saying, the second person may be focusing only on his lines next. One thing you need to realize that proper listening would have helped you to give a better reply for what the other person has said.
The second point of communication skill training elaborates on the importance of right body language. For most people, their words and their body language do not match most of the time. If you do not have the right body language, you may find it difficult to create the positive vibe you wanted to have. You have to ensure that your body language carry the essence of your speech.