I have had sleep problems for the last 35 years except when I took some heavy duty sleeping pills for 2 years but the pills left me feeling drugged so I stopped taking them. Now I sleep whenever I feel tired sometimes sleep only 2 or 3 hours sometimes I will sleep about 20 hrs at a time waking up to go to bathroom or answer phone but find am still to tired to stay awake so sleep somemore. I do this about once a month