関連ワード:
why do people twitch when they first fall asleep why do people twitch when they fall asleep why do people shake when they fall asleep why do i twitch when i first fall asleep why do you twitch when you first fall asleep why do we twitch when we first fall asleep why do some people jerk when they fall asleep why do you jerk when you first fall asleep why do people twitch right before they fall asleep why do we twitch when were falling asleep
