Some people might not think about their posture and body language, to the detriment of their attitude and negotiating power.
It conveys competence. In a study conducted at Princeton, researchers found that a one-second clip of candidates for senator or governor was enough for people to accurately predict which candidate was elected. While this may not increase your faith in the voting process, it does show that perception of competence has a strong foundation in body language.Dr. Travis Bradberry