In all honesty, I think unless you haven't smoked for at least two to three days, you are still under the influence. Just my opinion ya know, but I think most will agree that it lingers like no other kind of drug or compound out there.......
I am not going into a long discussion of off-topics that have a longer shelf life. I can say definately though, having the physical problems that I have, I am a lot better off with it in my system than not. I take a three day break every month, but at the end of that three days, I am beginning to suffer and my blood pressure shoots up.
The pain relief is very pleasant also, and hard to do without for those three days, but I tough it out......Long time users on a daily basis hold more of the chemical in their systems than they realize, so you are stoned for days, but the intial rush doesn't last that long, so we smoke more.......
Which isn't a bad thing........
Some Where In Ded Land............