What causes babies to eat?

Children eat hands is a sign of the child's intellectual development, is the child has the ability to exercise muscle groups and muscle control ability to cooperate with each other, but also a healthy way for the baby to comfort himself. In the child 2-3 months with the development of the brain, gradually entered the lip pleasure period. At this time, the hand in the child's eyes is a fun toy. When the child feels uneasy, agitated, nervous, will eat hands to calm their emotions. Sometimes while the child is asleep, we also see the child sucking his fingers to comfort himself and fall asleep again.