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A hypnic jerk is a sudden involuntary twitch or muscle contraction that occurs as you fall asleep. Also known as sleep starts, these hypnic jerks may jolt the entire body or affect only one part, like ...

Have you ever jumped just as you were about to fall asleep, with the sudden sensation of falling into a void? This phenomenon, although surprising, is actually very common and has a name: hypnic jerk.

You’re finally drifting off to sleep… your breathing slows, your muscles relax, and then suddenly, your whole body jerks awake. For a split second, it feels like you’ve fallen or tripped, and your ...

That sudden jolt or twitch just as you’re drifting into sleep isn’t your imagination. It’s a real physiological event. One moment, you’re fading into slumber, and the next, your arm or leg flings out ...

You’re gently drifting off to sleep when suddenly your arms and legs convulse and you jolt yourself awake. Or, perhaps you’re relaxing in bed when, out of the blue, your dozing partner does an ...

Did our AI summary help? Many of us have experienced this at least once in our sleep: the dream of falling off a cliff, which leads to waking up with a jerk. If you have ever wondered why this happens ...

You have just drifted off to sleep when suddenly you feel like you are falling and are jerked awake. What happened? You just experienced what is known as a “sleep start” or “hypnic jerk." Technically ...

Ever felt like you were about to fall into a hole just as you were dozing off, and then your body suddenly jolts you awake to avoid it? It's a common thing – we’ve all felt that at some point in our ...

Twitching at night—it’s something few of us talk about, yet it’s also a phenomenon that impacts Americans when it comes to sleep quality. And even if you feel like you’re getting enough sleep, you ...

You’re drifting off to sleep, floating in that hazy realm between wakefulness and dreams, when suddenly—BAM!—your body jerks violently as if you’ve been dropped from a height. Your heart races, you’re ...