Dude, i used to be a starting soccer player all 4 years of highschool. Smoked ciggarettes and weed, during the break during practice id run out to my car and have a quick smoke, coach caught me once I was underage and well on the soccer team that was not fun one bit!

It was rough though seriously I had to work like twice as hard as some of the kids, it doesnt help that i have slight asthma either.

I am living proof! It is possible to smoke weed, smoke tobacco and run several miles a day, although i bet i cant even run or sprint half a mile anymore, havent excersized in like a full year.