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 ...

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 ...