Do you know this?

.........that babies do not breathe in the womb. So the question is - then how?

Unborn babies don't really "breathe" in the womb. They do suck in and out the amniotic fluid (the mother's "water"). They receive all nutrients and gas exchange (oxygen/carbon dioxide) through the placenta and Umbilical cord. When they are born and take their first breath of air, a chemical called surfactant is secreted into the lungs causing them to be able to inflate correctly.