Yesterday we discussed eye contact but the eyes are not the only social cue we have to offer. The quickest way to put your best face forward is with a smile.

Smile and the world smiles with you!

Smile and you are saying "I'm approachable, happy and confident."

If you smile at another person chances are they will smile back. In much the same way as if someone tells you "good morning" there is a strong chance you will respond in kind. This is a function of our natural predisposition to synchronize and reciprocate behavior. It is called limbic synchrony and it is hardwired into the human brain.