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A big, convulsive twitch while dozing off? Sleep experts explain the ‘hypnic jerk’

  • Written by The Conversation
A big, convulsive twitch while dozing off? Sleep experts explain the ‘hypnic jerk’Photo by cottonbro studio/Pexels

You’re gently drifting off to sleep when suddenly your arms and legs convulse and you jolt yourself awake. Or, perhaps you’re relaxing in bed when, out of the blue, your dozing partner does an almighty twitch, scaring you half to death.

This is called a hypnic jerk or sleep start. It is often accompanied...

Read more: A big, convulsive twitch while dozing off? Sleep experts explain the ‘hypnic jerk’

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