Posture is the position of a person’s body when standing, sitting, or lying down. Good posture allows us to sit, stand, walk or lie in positions where the least amount of strain is placed on supporting muscles and ligaments throughout the body during movement or weight-bearing activities. Several factors contribute to poor posture-most commonly, habits of sitting or standing in certain positions, stress, obesity, pregnancy, weak postural muscles, abnormally tight muscles, and high-heeled shoes. In addition, decreased flexibility, a poor work environment, incorrect working posture, and lack of stretching and strengthening activities. There are four types of postural alignment that deviate from the ideal.