I didn’t know… 😳
Hypnic jerks, or sleep starts, are sudden muscle twitches that occur as you fall asleep. They usually affect one side of the body and happen during the hypnagogic (wake-to-sleep) transition.
### Causes
– **Brain Misfires**: Nerves in the brainstem may misfire, causing a reflex.
– **Relaxation Misinterpretation**: Your brain may think you’re falling, triggering a jerk.
– **Risk Factors**: Excess caffeine, late-night exercise, stress, and sleep deprivation increase the likelihood.