Breastmilk can usually be fed to babies normally, no matter how long it is held in the body. Many people think that breastmilk will deteriorate after it has been held inside the body for a long time and cannot be fed to the baby anymore, but this idea is actually wrong. The inside of a woman’s breast is a sterile environment with rich blood circulation around the mammary glands, and the milk accumulates in the mammary glands without loss of nutrients, not to mention deterioration, so even if the breastmilk has been held in the breast for a long time, it can still be fed to the baby. Although breast milk can be fed to the baby even if it has been held in the breast for a long time, if the breast is filled with a large amount of milk for a long period of time, it will affect milk secretion and increase the risk of mastitis. Therefore, when a woman is not able to breastfeed her baby in time, she can suck out the milk by using a breast pump or squeeze it out by hand.