1. The circadian rhythm has not yet formed
Sleep is a process of alternating deep and shallow sleep, with an average of 2-3 hours as an alternating period. There are about 3-4 alternating periods of deep and shallow sleep every night.
The excitation and inhibition function of the baby’s cerebral cortex is not perfect, the sleep regulation function is poor. If stimulated by some factors in life during the day, a certain area of the cerebral cortex will remain in an exciting state in the alternating process of deep and shallow sleep after falling asleep at night, the baby will easily wake up from shallow sleep and can’t sleep well.
2. Excessive excitement before bed
If babies are too excited when playing with new toys before going to bed, or too nervous when going to strange new environments with their mothers, their sleep will be affected.
3. Frightened during the day
If babies are frightened when they play during the day, such as heard terrible stories that cause emotional or psychological fluctuations, they may sleep restlessly at night or cry several times during sleep.
4. Mom’s improper feeding
If the mother’s milk is insufficient or the baby is fed too much water or milk, the baby will not sleep well because of hunger or satiety.
5. Poor sleep response
Some mothers hug, coax, shake and pat their babies when they fall asleep. This kind of bad response will form a bad conditioned reflex and promote bad habits. For example, every night when the baby needs to sleep, the mother needs to accompany, pat and coax.
6. Poor bad a sleeping environment
The delicate baby is sensitive to a little stimulation from the outside, such as hot and humid weather, noisy outdoor sound, bright outdoor lights, dirty indoor air, high or low temperature all can make the baby sleep disturbed.
If the baby suffers from rickets, vitamin B1 deficiency and other diseases, he will cry at night. In addition, heatstroke, cold and fever, otitis media, laryngitis, bronchiolitis, pneumonia, gastroenteritis, prickly heat and diaper rash will make the baby can’t sleep well.