Human birth is the process by which a baby is delivered from the mother's womb. It typically occurs after a pregnancy lasting about nine months, during which the fetus develops inside the uterus. The birth process can happen in various ways, including vaginal delivery or cesarean section, depending on the health of the mother and baby. During birth, the mother's body undergoes contractions to help push the baby out. The baby is usually born head-first, and once delivered, the umbilical cord is cut, separating the baby from the mother. After birth, the newborn begins to breathe air and adapt to life outside the womb.