Researchers estimate that a large percentage of adults experience hypnic jerks at least occasionally. Some people notice them only a few times a year, while others experience them more frequently.
Part 2: Why Does It Happen?
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Not Many People Know What It Means When You Suddenly Jerk Your Body While You Sleep
That sudden jolt that wakes you up just as you're falling asleep is more common than most people realize—and it usually has a fascinating explanation.
Chapter 2
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