Why Do I Jerk Awake Right As I’m Falling Asleep?

Sept 24, 2015

There’s a name for this phenomenon: It’s called a hypnic jerk or sleep start. It’s a sudden increase in muscle activity that happens to just about everybody and can be quite literally startling, though the intensity depends on the person, says Carl Bazil, M.D. Ph.D., director of the Sleep Disorders Center at New York–Presbyterian/Columbia University Medical Center… Others actually cry out in fear, says Dr. Bazil, who’s also a professor of neurology at Columbia. [read more]