Mr. Zhou is 50 years old and has been sleeping poorly for more than 20 years. He sleeps nearly a dozen hours every night, but still feels lack of energy during the day, unable to recover his strength, easily sleepy, and can even fall asleep in a few minutes while waiting for a traffic light. In recent years, his poor sleep quality has become more serious, his memory has declined badly, his blood pressure, which was already overweight, is getting higher and higher, and his blood sugar has started to be abnormal. The doctor at the sleep clinic told him that this was due to chronic deep sleep deprivation caused by snoring during sleep. Mr. Zhou told Dr. Xuan Wei at the sleep disorder clinic of Xiamen Xiangyue Hospital that he felt disoriented most of the night when he slept, and he could feel people talking and walking next to him; the next day when he got up, he would have a headache and dry mouth, and he felt that his mental and physical strength had not recovered. Because of poor sleep, his body has recently become much worse, his memory has also declined greatly, and he is much more depressed and worried and anxious about sleep; he has taken sleeping pills during this period of time, but the quality of sleep has not improved, and he feels more pronounced headache and dizziness when he gets up the next day. But his lover said he sleeps very well, and the whistling comes every day as soon as he lies down on the bed. After learning more about Mr. Zhou’s condition, Dr. Wei suggested that he undergo all-night sleep monitoring to find out the real sleep situation. The monitoring report shows that Mr. Zhou has a severe sleep apnea hypoventilation syndrome, with more than seventy times an hour of apnea or hypoventilation, which means that there is more than one apnea or hypoventilation per minute during sleep. Snoring during sleep is not a sign of a good night’s sleep, but a relaxation of the muscles in the throat during sleep or a drop in the muscles of the oronasopharynx leading to narrowing of the upper whistle, and snoring occurs when airflow hits the narrowed area, similar to the sound of water when it passes through a narrow part of the river. When the airway is too narrow or blocked, it can lead to sleep apnea and hypoventilation, which causes lack of oxygen to the body organs during sleep. This chronic lack of oxygen for a long time can lead to chronic pathologies in various organs, such as hypertension, diabetes, kidney failure, brain atrophy, etc. If the blockage is too long, sudden death can easily occur. However, the body has a self-protection mechanism, when there is sleep apnea or hypoventilation, the brain will briefly wake up and regain control of muscle contraction and whistling, so onlookers can sometimes hear the snorer have no whistling sound for a while, and then suddenly a louder snoring sound. In patients with sleep apnea hypoventilation syndrome, the brain wakes up frequently to control whistling, which can lead to shallow sleep throughout the night, dreaming, lack of deep sleep or lack of it, fragmented sleep, and poor continuity. Such patients should not take sleeping pills, which tend to reduce the brain’s sensitivity to hypoxia and aggravate sleep apnea and hypoventilation. Combining the all-night sleep monitoring report and his condition, Dr. Wei advised Mr. Zhou to stop taking sleeping pills and undergo treatment, strengthen his exercise to control his weight, sleep on his side, and use a sleep whistle machine for treatment.