hypnic jerk
Asheville
A hypnic jerk, hypnagogic jerk, sleep start, or night start, is an involuntary twitch which occurs during hypnagogia, just as a person is beginning to fall asleep, often causing them to awak…
A hypnic jerk, hypnagogic jerk, sleep start, or night start, is an involuntary twitch which occurs during hypnagogia, just as a person is beginning to fall asleep, often causing them to awak…