How does power pumping work?

Power pumping mimics a baby's growth spurt hence leading your body to produce more milk as if baby is demanding more. How to power pump? Pump for 20 minutes, rest for 10, pump another 10, rest again for 10 and then one last round of 10 minute pumping. Some mummies have advised to do this daily at roughly the same time everyday until you are satisfied with your output. As for me, I see the effect after 1 session and don't have to do it again until I feel a dip in supply. If you power pump, make sure not to pump too much or you may have an oversupply. Oversupply leads to engorgement, and if not dealt with properly can lead to clogged ducts or worst case mastitis.