Parasomnias are sleeping disorders that occur during REM sleep and affect one's ability to achieve proper rest. Sleep paralysis is one of the more frightening parasomnias because it renders the individual unable to move for short periods of time. Approximately 30 percent of people experience a sleep paralysis event at least once in their life. For some, however, it is a chronic condition that persists for years and can cause and is caused by various issues.
One of the major causes of sleep paralysis is lack of sleep, which affects between 35 and 40 percent of adults. Changing work schedules, jet lag, and stress also contribute to sleep deprivation. Most people experience their first incident of sleep paralysis in adolescence, and they become more frequent in adulthood. Sleep deprivation fragments the rapid eye movement cycle when the body is naturally paralyzed during dream states. When the body is out of sync with the brain, the latter can achieve a level of consciousness, while the body remains paralyzed.
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