This is former U.S. Senator and Republican Presidential Candidate hopeful, Rick Santorum during a political rally recently in Illinois. Notice the tension in his hands and the corresponding tension in his mid-face and mouth. If there are negative facial emotional displays - there is a very high correlation with tension in the hands. They tend to strongly mirror each other. The reverse is also true. If the face is relaxed - the hands tend to be tranquil as well. This nonverbal tell is particularly valuable during negotiations, sales and in similar contexts. Frequenting cross-checking these two areas will help to nuance your body language interpretive skills.