A child’s eyes will roll around when he falls asleep, this is because although the baby sleeps quietly on the surface, he is still in light sleep, also known as the eye movement period. When the baby enters deep sleep in a little while, the baby’s eyes will not roll around. Similarly, when the baby is going to wake up, there will also be such a transitional stage of waking up gradually. In the case of a newborn baby, there are five more stages between sleep and wakefulness, which is simpler for older children. When the baby is just falling asleep, pay attention to keep the surrounding environment quiet, because at this time the baby has not yet entered deep sleep and is easily awakened by some sounds.