Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Childbirth ?
    ### Response:
    When you are ready to have your baby, you'll go through labor. Contractions let you know labor is starting. When contractions are five minutes apart, your body is ready to push the baby out.    During the first stage of labor, your cervix slowly opens, or dilates, to about 4 inches wide.
    