How does expressing milk feels like for the mum?

It’s this tingling, buzzing ‘champagne bubble’ type sensation inside your boobs as the milk is forced from the mammary alveolar glands into the lactiferous milk-ducts, which are then emptied as the milk is finally delivered to your nipple openings. The rush of oxytocin-rich blood also warms your breasts, and you can actually feel them getting hotter. You really are now, without doubt, a portable dairy factory!