Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Body twitches before I fall asleep

  1. Aug 28, 2005 #1

    JamesU

    User Avatar
    Gold Member

    Sometimes, almost every night, when I'm just about to fall asleep, my body shakes orjumps a few inches of the bed. can anyone explain this?
     
  2. jcsd
  3. Aug 28, 2005 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    You mean like an involuntary twitch in all your muscles, causing you to jump?
     
  4. Aug 28, 2005 #3
    If there is no pain,and it only happens once a night, I wouldn't worry about it. My son has restless leg syndrome, the twitch happens more then once and is mostly in his legs but can make his entire body jump.
     
  5. Aug 28, 2005 #4

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    I would think it has something to do with the rather more common "snapping awake" phenomenon (i.e, sitting in your chair dozing, and then with a muscular jerking, becomes fully awake in less than a second)
     
  6. Aug 28, 2005 #5

    JamesU

    User Avatar
    Gold Member

    yes, exactly.
     
  7. Aug 28, 2005 #6

    JamesU

    User Avatar
    Gold Member

    yes, right again
     
  8. Aug 28, 2005 #7

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Now, this is just total speculation on my part (I haven't any sort of evidence for it), but perhaps what you (and many others) are having is a basically a natural response occurring erratically because the original provocant of the response is not present any longer.

    I'm thinking that when "we" all lived on the steppes and there were lots of dangerous animals prowling about in night-time, those individuals who were better able to snap out of sleep with their muscles fully functional might have an adaptive advantage compared to those that didn't have that ability (at least, they wouldn't be eaten in their sleep..).

    So, your ability to do this is on occasion brought into action; perhaps just to keep you fit, or something?
     
  9. Aug 28, 2005 #8

    Lisa!

    User Avatar
    Gold Member

    It happened to me when I was almost in your age. I was about to fall asleep and suddenly I thought I was about to fall from somewhere or fall into a hole and stuff like that and I jumped alittle and sometimes almost sat in my bed. But it doesn't happen to me anymore. Right now other things wake me up. :wink: Anyway I think your problem will sort out as you get older.And Perhaps you'll get into other kind of problems problems like insomnia or not having enough time to sleep!
     
  10. Oct 10, 2005 #9
    it might be serious it might not

    everyone once -in-a-while, when im in that almost asleep, but not quite state and I dream that i trip or jump, my body reacts. I think it is just that I have started to dream but am not fully asleep so my body still reacts to mental commands and thoughts. i think thast normal and not serious, but hey just cause it happens to me doesn't mean its ok :P
     
  11. Oct 10, 2005 #10

    Evo

    User Avatar

    Staff: Mentor

  12. Oct 10, 2005 #11

    JamesU

    User Avatar
    Gold Member

    it hasný happened to mein awhile now
     
  13. Oct 10, 2005 #12

    Evo

    User Avatar

    Staff: Mentor

    It comes and goes.
     
  14. Oct 10, 2005 #13

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    That makes sense, because when falling, you are accelerating, and since the jerk is the derivative of acceleration, it is only natural that you should snap awake, or jerk, rather.
     
  15. Oct 11, 2005 #14
    Something to that effect happened to me once back in high school. I was falling asleep in study hall, and I slipped into a very brief "dream": I was riding my bicycle, and for some reason (it was very vague; I must have hit a bump) my bike flips foward and I was launched over the handlebars. In effect, I "jumped" awake and became very alert, perhaps with the fear that my head would smash into the ground.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Similar Discussions: Body twitches before I fall asleep
  1. Involuntary twitches (Replies: 7)

  2. Before the big bang (Replies: 14)

Loading...