Marijuana's effects and bodybuilding

Hello, I'm doing an article on the effects of marijuana on working out/competing for a major newspaper in Winnipeg.
Basically, some that workout while using marijuana say it helps them in a variety of areas, including focus and muscle relaxation. There's not a ton of studies on this that are conclusive. I want to get someone who smokes and works out and notices (or doesn't) any benefit from using the drug.
I'm ideally looking for someone from Winnipeg or Manitoba as I need a local voice. Ideally, this person wouldn't mind being quoted.
If you can please reply to this or private message me, that would be great
Also, my apologies if this is the wrong subforum, I'm not too sure which would be the best.
Thanks.