not any coughing, but those big painful coughs that yo get from say a bong rip, those force the blood vessels to further exapnd and thus increases the rate at which the vaporized thc enters the system...I didn't believe this idea for a long time, but lately ive become a believer.
doesnt coughing make the slime in your lungs move around , that might help the flow of thc into your lungwalls faster.
as the old saying goes, "you dont cough, you dont get off" im not saying im a firm believer of this, but im willing to believe anything these days =/ -Samus-
I don't believe this idea. It probably has to do with the holding in your breath makes you higher theory (since when you cough most of the time its because you held a major rip for too long).