Labor pain in physical therapy point of view labor pain is often described as the worst pain in a woman's life, but the experience is highly variable. Although many factors have been linked to labor pain, it has been difficult to assess the individual effects of these factors because labor is a dynamic process and pain intensity changes over the course of labor Childbirth education is considered a key component to prenatal care, although many women do not receive any formalized preparation. There are multiple models of childbirth education for both within health care settings, including Centering Pregnancy, and external programs, such as Lamaze and Bradley.