Type A personalities generally have an impatience with people and always feel an urgency when it comes to time management. For example, a type A is frustrated with long lines, interrupt people when they are talking, and talk really fast. They also tend to be hostile and agressive, which is sometimes seen as rudeness. Finally, type A's tend to be competitive, and driven to succeed.
The physical characteristics and health risk factors are teeth grinding, facial tension, hypertension, heart disease, job stress, and social isolation.
Type B personalities tend to like to be the center of attention, they are high energy and love excitement. Type B's are supportive of others, but also want very much to be liked by others. They are outgoing, talkative, and persuasive.
They are also at some risk of hypertension, and heart disease, but are less prone to stress as they are less competitive and more relaxed in their outlooks on life.