Babies who are not fed enough will have many manifestations, as follows: 1. Children who are not fed enough will not be able to sleep quietly, they may wake up soon after falling asleep, or they may be restless during sleep, always moving around. 2. Children who are fed only milk are usually not given extra water, and if they are not fed enough, their urine volume will be low and the color of their urine will be yellow. 3. Children who are not fed enough will produce less stool, which can be thin, pasty or greenish. The stools can be thin, mushy or greenish, but usually they are not guaranteed to be defecated every day and may be defecated at intervals of 2-3 days or longer. The stools are not dry or hard, but are mainly soft and pasty or greenish. The best way to judge inadequate intake and under-eating is to assess body weight, which requires observation of weight gain levels over a period of time, and if weight gain is not satisfactory, this is the best criterion to judge inadequate intake.