I have the same problem...but I can only get really shit hash so If I smoke a joint the first night it will knock me out but a few nights after that i hardly feel stoned off it at all.

Its mostly my thoughts that keep me awake...but I move around alot aswell which keeps me awake and I wake up multiple times in the night...

I actually made a thread on this alittle while back...you might find somthing useful there
http://boards.cannabis.com/showthread.php?t=39874

hope this helps dude
Az. Reviewed by Az. on . i cant sleep. i cant sleep. my legs are restless, its too hot, too cold, too dark, too light, too noisy, to quiet my thoughts also keep me awake, thinking about random things. my mattress is too soft, to hard, my blankets feel odd and my pillow is never at the right level. when im lucky enough to get to sleep i wake up several times in a sweat, achy joints and dizzy. Rating: 5