We can actually notice that many people are suffering from something we may call, a Social Anxiety Disorder, commonly termed as SAD. People suffering from this remain stressed, most of the time. Their muscles constantly remain in tension almost always. There is a certain technique mainly used to get rid of this state called Progressive Muscle Relaxation or in short form PMR. This is one of the best techniques for anxiety reduction. It was first introduced by the American Physician Edmond Jacobson in the 1930's. It involves tension and relaxation in the body's major muscle groups.