I been smoking for a total of two years, I started late but the second year I started smoking daily, consuming .5-1gram a day and by the end of the year I started to feel hazy and some brain fog is that the right term.. well I have taken a tollerance break and im still in the process of it right now on day 11 and I feel like my head is clear at the moment and my memory is slowly getting better but not completly yet, and I plan on taking off more time to see the affects it will have.