. "How long does marijuana stay in system"@en . . "You can smoke one \"joint\"(the equivelent of 2 bowls) in a week and it will only stay in your system for 2-4 days. However, if you smoke anymore than that say two or three joints in the same week, it can stay in your system for up to 31 days. If you chronicly smoke marijuana it can stay in your system for up to 90 days before naturally leaving your system."@en . "You can smoke one \"joint\"(the equivelent of 2 bowls) in a week and it will only stay in your system for 2-4 days. However, if you smoke anymore than that say two or three joints in the same week, it can stay in your system for up to 31 days. If you chronicly smoke marijuana it can stay in your system for up to 90 days before naturally leaving your system."@en .