A, external factors 1, hunger Most often seen in newborns and babies within three months. This is when nursing or breastfeeding is needed to solve. Slightly older babies can exclude this factor if they eat well before bedtime. In dry weather, the baby may be thirsty at night, giving him some water can make him quiet. 2, calcium deficiency Calcium deficiency is one of the factors that cause little babies to sleep restlessly, and most mothers take it into consideration. Calcium deficiency and lower blood calcium cause increased excitability of the plant nerves in the brain, leading to night waking, night terrors, restlessness at night and restless sleep. The solution is to give your baby calcium and vitamin D supplements and more sunlight. 3, too hot Nowadays, most babies are wearing too much cover. In fact, it does not matter if the baby is cooler, too hot will make him uncomfortable and easy to get sick. If the room temperature is quite high, and wearing a sleeping bag, and then covered with a small quilt, the baby’s own heat dissipation capacity is poor, will feel hot and wake up. This can be solved by reducing the wear cover. 4, bloating 1 year old infants will appear in this situation. If you eat too much before bedtime, or if you don’t burp after drinking milk, your baby will wake up because of bloating. Older babies most likely ate something hard to digest within a few hours before bedtime. Attention to massage, exhaust and diet adjustment can solve the problem. The baby with food accumulation can be treated with a little herbal medicine. 5, wet, want to pee Because the diaper is too wet or strangled too tight, can also make the baby uncomfortable. Some babies do not want to pee easily on their diapers when they want to pee, and they will toss and turn uncomfortably. A careful mother observes and treats the symptoms and it will be solved. 6, too excited during the day or changes in the environment Sleep disturbances in slightly older babies can also be related to excessive excitement or tension during the day or changes in daily life. Such as going out, change in sleep patterns, moving to a new house, having new babysitters and strangers over. For example, the departure of the old babysitter can cause sleep disturbances at night. Frequent changes in caregivers also increase the incidence of sleep disturbances in children significantly. Sleeping too much during the day can also affect sleep at night. 7. Teething or physical discomfort Babies tend to have restless sleep during teething. Sometimes it takes a few nights of repeated tossing and turning before the mother realizes that the baby’s teeth have sprouted white baby teeth. Teething can be a little painful. Other illnesses can certainly cause sleep disturbances. The night before an illness or fever is often tumultuous. All of these require careful observation and judgment. Intrinsic factors The intrinsic factors of children also have an impact on sleep: the neurological development of the brain is not yet mature. The child’s physiology has not yet established a fixed schedule of work and rest. The adjustment of the baby’s biological clock day and night rule depends on the cooperation of the baby’s physiological maturity. Human sleep is divided into deep sleep and light sleep, which alternate at night for about 3-4 hours. Infants and toddlers alike may alternate between deep sleep and light sleep for a shorter period of time, about once every 2-3 hours. Adults and many babies who sleep through the night can adjust themselves better to get back into deep sleep when light sleep arrives. And there are many small babies and even many adults who are unable to self-adjust to sleep, so they wake up from light sleep. Many babies who are breastfeeding are unable to adjust themselves and psychologically crave caresses, and the mother’s breast is undoubtedly her greatest comfort. Of course, sometimes cuddling and rocking while walking can be effective, but it can easily lead to even less sleep. Especially as the nervous system develops and the cerebral cortex becomes active, the older the baby gets the more likely it is to fail to self-adjust. This is the reason why babies sleep worse and wake up more often after four or five months than when they were little.