In a dutch study test persons were secretly filmed while they were saying different words. Depending on the emotional significance a word had, the subjects altered unconsciously their posture. Words about pride caused the persons to unknowingly raise their posture, while words about disappointment led to an involuntary slouch. 

The researchers link to the theory of embodied intelligence that says that that our mental life is fundamentally connected to acting on the world. Interesting here is also the question, to which extent machines need a body for intelligent behaviour.

Abstract of the study (via Wiley InterScience)

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