Pain in childbirth may signal that something is wrong emotionally, or something is wrong with the environment. Keep in mind that the environment will effect the emotions as well. We will discuss environment more in a moment. Secondly, pain in labor triggers the release of a chemical from the brain. When the body works to the point of pain, endorphins are released into the bloodstream which have a profound effect on the physical and emotional response to pain.
Endorphins are endogenous morphine- natural painkillers.
Endorphins also enhance the body's ability to endure, they cause you to forget the discomfort, and they increase your feelings of satisfaction with your work. This sounds good. It takes pain to stimulate endorphins, then the pain is relieved by the body's own natural analgesic. Another hormone affecting labor is adrenaline . Adrenaline is a vital hormone that is released when an environment or situation is not safe.