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roosan 2015-07-31 18:56:32 No. 1149
This has definitely happened to me before. If I fall asleep during a lecture, I sometimes begin to dream and if I fall down during that dream, my arms (irl) will flinch out in front of me a bit and I will wake up. Fortunately, usually nobody notices.
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Anonymous 2015-07-31 19:57:36 No. 1151
This is quite common. The explanation I was given, [citation needed] was that the spasms cause the dream and not the other way around. Like your muscles twitch involuntary and then your brain invents a dream to explain what's happening. It might seem like a minute but it all plays out in a split second. I've heard these mini-dreams referred to as "dreamlets" also.
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Anonymous 2015-08-02 19:35:10 No. 1175
It happen with me too. My hypothesis is that your unconscious mind think you will die when you fall a sleep. It's like the Celtic way to think: You die every night when you sleep. And rebirth at the dawn. Too much spiritual for me.
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Anonymous 2015-08-03 02:29:18 No. 1178
The term for this is a hypnic jerk. I think most people experience it from time to time. Wiki article says there's a hypothesis that it is a vestigial reflex that prevented early hominids from falling out of trees while sleeping.