Hypnic jerk
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Hypnic jerk, also known as hypnagogic jerk, is a sudden muscle contraction or movement that occurs just as a person is falling asleep. This can result in a feeling of falling or being startled, and can cause disruption to sleep. Hypnic jerks are a common and normal part of the sleep process, but they can become more frequent or severe in certain individuals. Treatment options are typically not necessary, but lifestyle changes and relaxation techniques may help reduce the frequency of hypnic jerks.
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