Hypnagogic jerks refer to involuntary bodily twitches, movements, or muscular jolts that occur during the transition from wakefulness to a sleeping state.  Most people are thought to experience them just moments before entering the first stage of sleep.  In some cases, hypnagogic jerks are also referred to as “sleep twitches” or “sleep starts,” but are … Continue reading What are Hypnagogic Jerks? Twitches Before Sleep.