News Every Pothead Must Know
“The performance on lung tests improved steadily until marijuana smokers hit more than 10 joint-years. (Flash back to statistics class: One joint year is the equivalent of 365 joints or filled pipe bowls smoked—so smoking 10 joints a day for 36 days would be one joint-year.)
Even when they surpassed that amount, it took a good 20 to 30 joint years before lung performance dipped down to the level of non-smokers.”
(Source: news.menshealth.com)
