I don't think it matters how many times you smoke while growing, just need to keep it at a minimum and not heavily. That's what I've came to a conclusion of overall. And I don't believe that smoking heavily causes the chemicals of the cannabinoids to "stay" in your brain, the minute you stop smoking that's when the THC levels decreases. I mean it only makes sense. And wtf did that song that D12 made have anything to do with smoking young lol?