The answer would be muscle tension. Biofeedback is used by psychologist in order to give clients the information about tensions in their muscles. Biofeedback involves monitoring a bodily function and learning to control it. Hope this helps.
The answer is compulsions as they are the one being paired
to an individual that causes their anxiety. A compulsion is where an individual
has the tendency of doing something that are forcefully made or they are
pressured to do. People who have this make their anxiety lessen because it
disrupts the thoughts that are bothering them.