What if a newborn baby drink milk for 8 hours why do they do?

It is unlikely that a newborn baby would be able to drink milk continuously for 8 hours. A newborn baby's stomach is very small and can only hold a small amount of milk at a time, so they typically feed at 2-3-hour intervals. Additionally, breastfed or bottle-fed newborns will usually wake up after 15 to 20 minutes if they are full. If you feel a baby drank to much or for hours you should consult a pediatrition to check it to ensure there are no problems with the newborns health.