In the thick of the night, you can hear the sound of thunderous snoring from time to time. This is the time to be alert to the fact that an invisible killer may have crept up on you or your family. In life, we may occasionally encounter this situation, a friend who has always been healthy in sleep inexplicably died, a lively and cute baby in sleep quietly passed away, unaware that these accidents may be related to a common phenomenon in our sleep, that is, snoring and frequent sleep apnea, that is, the so-called sleep apnea adaptation syndrome. Specifically, there are several manifestations: 1. Snoring. The volume is large and very loud; the snoring sound is irregular and intermittent. 2.Extreme daytime sleepiness. Sleepiness or drowsiness occurs during daytime, and the patient can fall asleep immediately without control, sometimes falling asleep during meetings, falling asleep at work, falling asleep when talking to each other, falling asleep when eating, or even falling asleep while riding a bicycle. 3. Abnormal behavior and symptoms occur during sleep apnea. Patients can wake up with a start, or even sit up suddenly, sweating profusely, with a sense of near death. 4.Nocturnal enuresis, or increased nocturnal urination. 5.Morning dry mouth, headache, dizziness. 6.Loss of intelligence and memory, decreased academic performance. 7, male sexual dysfunction. Severe cases may be accompanied by hypertension, coronary heart disease, heart failure, cerebral embolism, cerebral hemorrhage and other diseases of the cardiovascular system and other important vital organs.