The baby keeps moving their hands and feet while sleeping and wakes up easily. What should I do?

Patient's question:

No

Doctor's answer:

The most common reasons why a child doesn't sleep soundly are:
First, not eating enough.
Second, stomach discomfort.
Third, calcium deficiency.
Fourth, over-warming during sleep, causing too much heat.
Fifth, lack of a sense of security.
Sixth, having been startled.
Seventh, having an abnormal birth history, with excessive nervous excitability.
Eighth, having a stuffy nose.