Why Do You Jump in Your Sleep?

Answer

People jump when they sleep because as they fall asleep, their muscles start to relax and sometimes this change may be abrupt causing their bodies to twitch. In some cases, the twitching may be more intense and this may be an indication of some disorder such as REM sleep behaviour disorder link or restless leg syndrome.
Q&A Related to "Why Do You Jump in Your Sleep"
It's not known exactly what causes the twitches, but they appear to be associated (although by no means invariably) with (a) anxiety and (b) some faint stimulus, such as a noise.
http://wiki.answers.com/Q/What_causes_your_body_to...
Muscle contractions (hypnic myoclonia) often preceded by a sensation of
http://www.chacha.com/question/what-causes-people-...
Sleep disturbances with body jerking can be the results of either periodic limb movement disorder,or a parasomnia. It can be normal or part of a medical illness. report this answer.
http://www.kgbanswers.com/why-do-people-jump-in-th...
Well that happens to me at school it just happened again like 2 days ago. I put my head down for a while but I was still awake and the next thing I know my freakin body jumped I was
http://answers.yahoo.com/question/index?qid=200905...
1 Additional Answer
Ask.com Answer for: why do you jump in your sleep
Why Do I Jump in My Sleep?
When a person jumps in their sleep, these movements are called myoclonic twitches, and it's theorized that these are caused by a body that relaxes too quickly or a brain that is aware of becoming unconscious. Discover why myoclonic twitches aren't a... More »
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Jumping while asleep is a medical condition called sleep myoclonus. While you are asleep, your muscles involuntarily contract and relax and this results in the ...
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