Not only has a recent study conducted by the University of Alabama Birmingham and U.C.–San Francisco found pot smoking is “better” for you than smoking tobacco but it also found pot smoking may also improve your lung capacity. That could possibly be caused by the stretching involved in taking deep tokes.
Where the news of this study says pot smoking is “better” for you in this case that means less harmful and not smoking anything is what’s better for you. There is a downside in this study though as slate.com reports:
“If you have lived more than 10 “joint years,” aka a joint a day for a decade, and smoked pot more than 20 times a month, your lung capacity decreased.”