Acting out your dreams may be linked to Parkinson's

Dream enactment may be a marker of neurological disease like Parkinson's.  Signs may be apparent 13 years before conditions like Parkinson's disease is clinically diagnosed by a physician.  A sleep study may show characteristic evidence of preserved muscle tone in REM sleep.  Skeletal muscles are meant to be paralyzed during  REM in order to prevent acting out one's dream. Sleep-punching disorder may be linked to Parkinson's