During pregnancy, the mother's breasts will enter a stage of readiness to produce milk. From about the second trimester of pregnancy, colostrum is produced by the mother's body, until about 2-4 days after the baby is born. Colostrum is characterized by being yellow, thick and sticky, very rich in nutrients and antibodies. After about 5-14 days from the baby's birth, the mother's body produces transitional milk. From the 14th day onwards, the amount of milk secreted by the mother's body will continue to increase, turn white and thinner, called mature milk. Breast milk is the best food for the health and development of infants and young children. Breast milk contains all the necessary nutrients such as protein, sugar, fat, energy, vitamins and minerals in the appropriate ratio for the absorption and development of the child's body.