1, patting children to sleep is a way to express intimate feelings between parents and children, and children feel safe. Psychological stress is reduced, which helps to sleep.
2, a certain frequency of vibration will make people feel very comfortable, especially when they are tired, a certain frequency of vibration will make people fall asleep quickly. Therefore, a tired child will fall asleep quickly in a vibrating car or motorcycle, and the vibration caused by patting or gently shaking the child in his arms will also make the child fall asleep quickly.
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