Pot users have about 20 percent more sex than those who do not use it reveals a study of more than 50000 adult Americans. The findings published online in the Journal of Sexual Medicine negate concerns among physicians and scientists that frequent marijuana use may impair sexual desire or performance. Frequent marijuana use doesn't seem to impair sexual motivation or performance. If anything it's associated with increased coital frequency said the study's senior author Michael Eisenberg Assistant Professor of Urology at Stanford University School of Medicine in the US. The overall trend we saw applied to people of both sexes