Sleep apnea is a common syndrome in which pauses in breathing occurs while you sleep. Obstructive sleep apnea is when the upper part of your throat narrows or closes completely; Central sleep apnea is when you don’t make enough or any effort to breath. Breathing pauses can last from a few seconds to minutes. They may occur 30 times or more an hour. Usually a disruption in your sleep will occur to end the breath stoppage and normal breathing resumes, sometimes with a loud snort or choking sound. Therefore, sleep apnea usually is a chronic condition that is disruptive to your sleep and results in poor quality of your sleep, and daytime fatigue, sleepiness or tiredness.