Stress is defined as a person's physical and emotional response to change. There are different types of stress including general stress, cumulative stress, acute traumatic stress, and post traumatic stress. Sources of stress can come from environmental factors, organizational factors, and personal factors. Common causes of stress include divorce, death of a loved one, financial setbacks, employment changes, and traffic. Stress can be positive or negative and classified as acute or chronic. Symptoms of stress affect behavior, physiology, and psychology. Stress management techniques include healthy living, exercise, social support, organization, anger management, flexibility, and pursuing hobbies.