What is a hypnic jerk?

On March 12, 2019, Posted by , In Buzz, By , , With No Comments

Hypnic jerks, which people also refer to as hypnagogic jerks or “sleep starts,” are involuntary muscle contractions that some people experience as they are falling asleep. Some hypnic jerks are mild and hardly noticeable. Others can be intense — anyone who has been close to falling asleep and then felt…