Emotions and their hidden storytellers

Some people say that one reads a person's emotions on their faces. True, but quite apparent.

There is another signal hidden behind the back - the position of the hands.

The hands behind the back have a story to tell.

They possibly are relaxed on a Sunday afternoon stroll.

They may go alongside a proud chest of a chairman - a proud posture of power.

They may be the shy hands of a maid who doesn't know how to position her hands except to hide.

Why are you hiding your hands behind your back instead of showing them to your opponent? Why are you denying them the opportunity to see you communicating with your hands in the open? Why are you not showing your emotions, vulnerabilities, and weaknesses?