Body language refers to those gestures, postures, and facial expressions by which a person may indicate various physical, mental, or emotional states being called "communicating nonverbally" with others.
This nonverbal communication by means of facial expressions, eye behavior, gestures, posture, and the like; are often thought to be involuntary.
Then there are the deliberate, usually culturally influenced, nonverbal communication using the body through facial expressions, gesticulations, dancing, insufferable mimes, and so forth.
Now then, I'm not a big proponent of body language as an art form and even less so as a science. I dare say I think students of body language are pseudointellectuals attempting to tout some nonexistent "skill" as worth mentioning. Perhaps too many of us are simply of a too 'follow he herd" mentality and just want to act similarly to everyone else they know.
I know many others will disagree.
Perhaps this is all due to 'poker face' and not revealing yourself to your enemies such as I have practiced since boot camp where I was thrown in the brig for mutiny and conspiracy. Such ridiculous antics by idiots in charge lead to the keeping of ones heart far from their sleeve.
Today is National Body Language Day. It is held since 2010 under the auspices of one Blanca Cobb, so-called "body language expert" and usually goes down on the first Friday of October making it October 4th this year.
The day is meant to make people realize some power in body language as an important mode of communication. I for one am ususally crystal clear in my intent, and yes, I suppose that you might say that body language could be a valid indicator of this.
For example, with me you will readily know if I am incredulous — or bored — or if you better run for your life. I remain and have been a very effective communicator. If you wish to attribute part of this to your perception of "body language" then more power to you !
Happy National Body Language Day regardless of your take on it all.