i smoke pretty daily as well (in fact i'm smoking at the moment )
the only time i tend to stop smoking for days is after i roll once in a while. i am normally drained of all emotion for a day or so, so i don't even desire weed (all i desire during this period is more E hahahaa). well while i'm not high for a few days i notice my sleep is really messed up, with very disturbing dreams and sporadic waking. but that's probably coupled with the after-x experience and not just because i happened to stop smoking for days at a time. also i loose about 3 pounds cause i can't eat shit for like 60 hours . but yeah usually a day without weed is a pretty fucked up day.