And that’s exactly what happens during a hypnic jerk; your muscles twitch and your brain goes, “Hey! Wake up, something’s happening!”
Why Does It Happen?
In most cases, a hypnic jerk is nothing to worry about.
In such a case, the muscles begin to relax in preparation for sleep. The brain gets confused by this, thinks the body is falling and tenses the muscles to brace for impact.
It’s just a simple misunderstanding. Usually.
For some people, a hypnic jerk can actually be a symptom of a serious health condition.
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