It squeezes that milk out of the cells and into these milk ducts. And then the milk travels via the ducts, through the tiny holes in the nipple and eventually into the mouth of that baby. So this is how lactation actually takes place. This is how we form the milk and eventually release the milk into the mouth of that fetus. So, once again, what exactly are the effects, the positive effects of the process of breastfeeding? So we see that during breastfeeding our hypothalamus stimulates the inferior pituitary gland to basically release oxytocin.