Type B Personality
Friedman and Rosenman conducted studies on the relationship between stress and heart disease. One of the outcomes was the discovery of Type A and Type B personalities. People who are classified as having Type B personality are better at relaxing without feeling guilty and working without becoming anxious or agitated. Some of the other characteristics include being more relaxed about time (they don't get overly stressed about being late), and are not easily angered. You probably know people who just seemed to be relaxed people who don't get angry often (they roll with the punches well)...these are the characteristics of a Type B. They are the opposite of Type A people.