KidsHealth

1Apnea of Prematurity
Apnea of prematurity (AOP) is a condition in which premature infants stop breathing for 15 to 20 seconds during sleep. It's frightening while it's happening, but AOP usually goes away on its own as a baby matures.

2Apnea
Everyone has brief pauses in breathing called apnea - even your child. Usually these brief stops in breathing are completely normal. Sometimes, though, apnea or other sleep-related problems can be a cause for concern.

3Lungs and Respiratory System
By the time we're 70 years old, we will have taken at least 600 million breaths. All of this breathing couldn't happen without the respiratory system.