If you are asking about the Apgar scale the number two is related to the overall health of the baby after birth. The Apgar scale was developed by Virginia Apgar in 1953. Apgar is also an acronym which stands for appearance, pulse, grimace, activity (muscle tone) and respiration. Each of the five categories is give a score of 0, 1 or 2 (2 being the healthiest). These scores are added up for a total score of 10 points, being a healthy baby. The doctor determines this score after the child is born and it determines the condition of the baby. A 2 as an overall score would mean the baby is in critical condtion and needs to be taken to the newborn ICU.