People often cover their mouths when lying. A hand on the mouth or even a touch of the lips shows you that they are lying because this unconscious body language represents a closing off of communication.

When it comes to getting promoted, you want to present yourself in a way that feeds into the biases that bosses have about what makes someone promotable. You're already doing the hard work, so why not frame your effort in such a way that it increases your chances of obtaining the position you want?

Liars hate silence, so they often try to fill it up by talking more than they need to. They provide far more information than was needed or asked for.

Travis Bradberry Quotes