During childbirth, oxytocin is the most crucial hormone. Without it, the uterus, which is a large muscle, cannot work. It's when oxytocin binds to receptors connected to the uterus that it contracts and creates what we call contractions or labour pains. Sometimes, synthetic oxytocin may be needed during childbirth, providing a similar labour-stimulating effect on the uterus as the body's own oxytocin. It is administered intravenously and helps the uterus gain more strength.
Body-produced oxytocin can be released through activities like physical movement, dance, or singing and does not necessarily have to be from physical proximity or with another person.