not enough sleep use to be a torture treatment for soldiers sometimes in war times in the 1900's. I need at least 8 to 12 hours of sleep as i have sleep apnea and sleep with a machine, but it does seem to help in the daytime but i must have at least 8 hours of sleep. needless to say i don't have a job i'm disabled from mental illness too. I just take my regular clozapine at night and usually can sleep but have nights where i can't sleep and stay up until morning. i think it would be considered insomnia on those nights. i wish everyone good sleep habits.