Though it’s somewhat mysterious (神秘的), sleep talking is a common phenomenon. 1 (and less than 10% do it every day). And roughly 67% of adults talk in their sleep at least once every three months. It often runs in families and tends to be more common among men. 2 — ranging from mumbling (咕哝) to complete sentences. Sometimes it may seem as though the sleep-talker is giving a speech, while at other times it can sound as though the person is carrying on a conversation with someone else. The chatter can occur during any stage of sleep.If a friend or family member has ever told you that you talk in your sleep, your first concern might be whether you said something offensive or let out a long-held secret. 3 , as far as your health is concerned.Sleep talking is considered a sleep disorder. In terms of what causes it, inadequate sleep, alcohol or drug use, illness, stress, anxiety, and depression are common causes of such unconscious thinking. 4 . In rare situations, sleep talking is associated with a psychiatric disorder (精神障碍).If you’re frequently waking up tired, or you feel overwhelmed (不知所措的) or sad most of the time, it’s worth talking to your doctor about sleep talking. 5 . If you talk in your sleep only occasionally and you are not experiencing symptoms of any other sleep disorders or health conditions, then it’s probably nothing to worry about.A. It can be annoying to be a sleep-talkerB. Sleep talking can vary considerably in its contentC. About half of kids talk in their sleep at least once a yearD. Just make sure that it isn’t a red flag for another health problemE. Therefore, for most people it is a rare and short-lived occurrenceF. Your second thought might be whether sleep talking is something to worry aboutG. Sometimes this nighttime chatter accompanies other sleep disorders such as sleepwalking