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A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.
The word hypnagogia is sometimes used in a restricted sense to refer to the onset of sleep, and contrasted with hypnopompia, Frederic Myers's term for waking up. [2] However, hypnagogia is also regularly employed in a more general sense that covers both falling asleep and waking up.
Individuals with exploding head syndrome hear or experience loud imagined noises as they are falling asleep or are waking up, have a strong, often frightened emotional reaction to the sound, and do not report significant pain; around 10% of people also experience visual disturbances like perceiving visual static, lightning, or flashes of light.
Want to stop waking up so early — or trying to shake your night owl habits? Experts offer tips for adjusting your sleep schedule. (Getty Images) (DuKai photographer via Getty Images)
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She explains that maintaining a consistent sleep schedule works, but it won't work if you're going to bed at midnight and waking up at 4 a.m. every day — that may check the box for consistency ...
Recurrent isolated sleep paralysis is an inability to perform voluntary movements at sleep onset, or upon waking from sleep. [22] Although the affected individual is conscious and recall is present, the person is not able to speak or move. However, respiration remains unimpaired. [22] The episodes last seconds to minutes and diminish ...
You wake up, for no apparent reason, at 5:03 a.m.—and your alarm is set for 6. Do you take advantage of an early start on the day or try to catch some more sleep?. The best answer depends on a ...
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