It may sound like an old wives tale, but nipple stimulation is the only scientifically proven method of bringing on labor. (doctor-info.website)
While having sex at the end of your pregnancy might not bring on labor, many couples report that having sex makes them feel closer. (verywellfamily.com)
It is the hormone that helps bring on labor during childbirth, and the production of milk in lactating mothers. (oxytocincentral.com)