In the baby to fall asleep the moment before, the best to be with him, given its security, rest assured sense [growth] baby baby sleep and sleep in the recovery of consumption of physical strength, and related with the growth of the growth hormone secretion during sleep, most sleep stage, growth hormone in the infant sleep release is waking up to 3 times or more, have enough growth hormone can promote the nervous system and brain development in sleep. In addition, sleep can strengthen the main hormone releasing muscle growth and repair, growth hormone can help the baby fat burning, and transformed into muscle energy, help the body to strengthen the ligaments and tendons, strengthen protein synthesis, therefore, growth and healthy sleep and the baby, can be said to be inseparable. [cognitive] baby infant sleep in bed, half the time the brain in order, reforming and cognitive day received data. Remind parents should pay attention to the baby's sleep quality, don't wake the baby, to develop good sleep habits. Research Report, lack of sleep baby, focus and concentration will be poor. [the baby sleep and immune resistance] reduced sleep or sleep deprivation, will cause the immune cell function decreased, the decrease of immunity. Baby sleep is not only to rest, sleep can also stimulate the different parts of the brain, the study is very important. Maintenance and development is directly related to memory and cognitive function of the quality of sleep. The baby to sleep, how sleep is normal? Every baby is different body, different sleep needs, different sleep mode. Eat sleep, sleep eating, is typical of the rest of the newborn babies, they eat sleep cycle is not day and night, respectively. After about six months old, ability of independent activity increased gradually, begin to try to explore the world around them, at the same time, more capacity and adult interaction, it gradually presents' activities during the day, sleep at night 'sleep mode. On average, the newborn's Day is about 2/3 more time in sleep, until the three year old children's day still need to sleep 12 hours. The baby to sleep in the physiological development. In general, the secretion of growth hormone peak at night, this time to have a good sleep, baby more grow up soon. The baby's brain is not mature, very small stimulus would make him feel tired. Sleep is the baby a important rest and recovery process. During sleep, the brain will secrete growth hormone, make the baby grow faster than awake faster. So, if the baby can sleep well, definitely beneficial to the healthy growth of