As an everyday smoker, I have built up quite a tolerance. :-( I smoke 2 small bong bowls about every 2 hours. It got to the point where even that wasn't getting me any more than a small buzz. BUT, I have been dry for about a month, and I know when I start again, my tolerance will be way down. Something I am really looking forward to. Starting back up any day now, as soon as my hook up comes through. I CAN'T WAIT!!!