Performance enhancing?

Let's start by stressing something - I don't smoke; never have and never will. I did however, spend 3 years as a student at a British University and have lots of friends, many of whom indulge and therefore have seen the smoking culture up close. So I have to laugh when I saw this article.

Mark Lewis-Francis - a British sprinter, is being stripped of a silver medal because marijuana was found in his blood stream - he's using the (to my mind entirely feasible) passive smoking argument. What I find amazing however is that marijuana is considered to be "performance enhancing" - the only way in which it might have helped is if someone whispered in his ear that there were munchies at the finish line.....

Gilly