Generally speaking the hind milk is reached when a portion of the foremilk is squeezed out and the nature of the milk changes. Some people are accustomed to let their babies drink only the hind milk after expressing the fore milk when nursing them. There is no very strict line of demarcation between foremilk and hindmilk, and when the color and nature of the milk changes during the process of expressing it, it means that hindmilk has appeared. What people generally refer to as foremilk is the first milk that comes out when a woman is breastfeeding, and this part of the milk contains more lactose and protein, less fat and is lighter in color. As breastfeeding proceeds, the color of the milk gradually becomes thicker, which is what people call after the milk, this part of the milk in the fat content is higher. In fact, both before and after the milk, are the baby’s growth and development needs, in the breastfeeding time there is no need to milk out the former milk thrown away.