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A 39-year-old member asked:

What are the causes of a persons body to just jump when they are sleeping?

2 doctor answers3 doctors weighed in
Dr. Denis Winder
59 years experience
Information: Interesting question. No specific answer. Usualy it has to do with some kind of electical activity in the brain during sleep.
Dr. Christopher Wilson
Sleep Medicine 22 years experience
Hypnic jerks: Hypnic jerks also known as sleep starts and very common and occur more frequently with some meds, stress, sleep deprivation, caffeine and alcohol consumption. It probably has to do with brainstem neurons flipping on and off during the change in state from wake to sleep.

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Last updated Apr 7, 2014


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