Muscle twitching, jerking, cannot lay or stay still. I try to sleep but the tossing and turning are uncontrolable and last for at least 6 hours. My doctor prescribed a sleeping pill, but it doesn't work. As long as I'm up walking around I'm okay, soon as I sit down, I know I have at least 6 to 8 hours of misery. I am never tired or sleepy. No matter how hard I work, I'm never tired. I average about 2 hours sleep. I'm 76 yrs and in good health.