Is "body language" all total nonsense?

Non-verbal communication is no doubt a fact of life, though the elevation of the study of body language to a consultancy "profession" is maybe stretching things a bit.

It's interesting to look at what has gone on in the past through the visual aid of knowledge of the present, as long as one is aware of the dangers of fallacious interpretation.

That being said and understood, it is nevertheless interesting to look at this.