Ok, so I have a drug test for a new job that I REALLY need, but I've been smoking a few times a week for many years now. My brother just moved in with me and isnt a smoker, so its no problem to get some clean piss. The test isnt untill the 19th of May, but I was wondering if I should bank on the substitution, dilute it, or just up my daily excercise and pray for the best. Im about 6' 2'' and 175 pounds. ANY HELP IS APPRECIATED.