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why does the body twitch when falling asleep why does the body jerk when falling asleep why does the body shake when falling asleep why does the human body twitch when falling.asleep why does the body twitch when you re falling asleep why does my body twitch when falling asleep why does the body twitch before falling asleep why does my body twitch when falling asleep reddit why does the body jerk when you fall asleep why do muscles twitch when falling asleep
