Loud snoring may also be a sign of an underlying problem such as sleep apnea, which is a chronic form of snoring that is characterized by the blockage of the air passage at the back of the mouth during sleep. Sleep apnea can cause a person to stop breathing for about 10 to 30 seconds, although some stop breathing for up to two minutes before their brain sets off the "arousal trigger" and wakes the person up, according to the book "Sleep."

打鼾也许是一种潜在问题的信号，如睡眠窒息，它打鼾病的一种表现形式，特征为睡觉时口腔后部气道堵塞。按照《睡觉》一书的说法，在大脑触发“觉醒板机”之前，睡眠窒息可能会造成10秒到30秒的呼吸停止，有的会长达两分钟之久。

Blocked air passages can cause those with sleep apnea to stop breathing and wake up hundreds of times throughout the course of a night, and they are usually unable to recall doing so the next morning. Besides preventing a person from feeling well-rested, the poor sleep quality caused by loud, chronic snoring can lead to cardiovascular problems, an increased chance of having metabolic syndrome and accidents associated with sleep deprivation.

气道堵塞除了会造成睡眠窒息之外，还会造成一夜之中几百次因呼吸停止而醒来。除了感觉休息不好之外，严重而长期的打鼾者还因睡眠质量不佳而患上心血管病，并且增加患新陈代谢综合症和因睡眠不足而发生事故的机率。

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