Hypnic jerk, also called as hypnagogic jerk, is a kind of sleep disorder that can be caused by anxiety, caffeine, a dream, or discomfort of sleeping. Basically, hypnic jerk is the feeling when people experience a sudden muscle twitch and feel like they are falling while sleeping and sometimes dreaming. About 70% of people have experienced hypnic jerk.[citation needed] There is no completely accurate explanation of this phenomenon, but most experts[who?] agree that as muscles begin to slack right after one falls asleep, the brain senses these relaxation signals and misinterpret as one is falling down. Then the brain will send signals to muscles to keep the balance. Studies[which?] also showed that there is a correlation between the frequency of hypnic jerks and anxiety. Fatigue, discomfort of the bed, highly intense exercise and stress might cause people to jerk during sleeping.
Posted on: Sun, 09 Feb 2014 00:48:41 +0000
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