Why Do Newborns Suddenly Cry During Sleep?

Question

Why do babies sometimes suddenly cry while sleeping at night?

Answer

Difficulty falling asleep and crying at night can be caused by the development of poor sleep habits. Parents should cultivate the habit of letting the baby fall asleep on their own, starting from the day, gradually extending the time the baby cries before being picked up to comfort them, ultimately achieving the goal of letting the baby fall asleep independently. In addition, night crying can also be due to factors such as overheating, being too cold, eating too much, or being hungry. Please note that this question is about why newborns suddenly cry during sleep at night, not when they are falling asleep. Therefore, the answer should include suggestions on how to deal with night crying, rather than how to help the baby fall asleep. Moreover, since many of the suggestions in the original answer are about how to help the baby fall asleep rather than how to deal with night crying, it may be necessary to adjust the answer to better address the questioner’s concerns.