In all honesty you won't feel much of a difference in your tolerance after just 4 days(congrats though on the dry spell). Now if you were to wait a month or better yet 2+... You will be baked like its the first time!! I quit smoking for job reasons a few years back. Didn't smoke for 1 1/2 years. When I finally was able to start again, I got so high I felt like I was in high school all over again!! After smoking regularly for so many years you forget HOW HIGH weed gets you if you have a low tolerance. Keep us posted!