I was referring to sleep apnea because I suffer from it. I snore severely and this causes a lot of strain on my heart and body,etc when I am without my CPAP machine. Without this machine I wake up exhausted no matter how long I sleep. My brain no doubt has been hypoxic and I suspect this could worsen my parkinsons. Oddly enough when I get 5-6 hours of sleep with the CPAP on I am refreshed, have an easy time with my meds and cope much better with the day. If I go 8 hrs or more I'm in a rut. Go figure, and around it goes!!!!