This is something that I do at least four times per year to be honest. Resetting your tolerance is key to maximizing your enjoyment of weed. It also creates a healthy respect for consuming weed. This is more of a personal test. How much do you “need” weed and how is life without it? You’ll get a new found respect for weed and the first toke after 7-days of abstinence (or 21-days if you’re hardcore!) will be like the first virgin toke you did so many years back.