What does go into labor mean?

"Go into labor" refers to the process a pregnant woman undergoes when her body begins the physical changes that lead to childbirth. It typically involves the onset of regular contractions of the uterus and the dilation of the cervix, signaling that the baby is about to be born. This can happen spontaneously or may be induced for various medical reasons. The duration and experience of labor can vary significantly from one individual to another.