weed isn't good for your lungs even if you do it once - will you notice much of a difference by doing it once? No
But each time you smoke weed you are doing harm to your lungs - so if cross-country indeed is important to you, why would you even consider something that can harm your capability?
_________________ "Go with the flow." -Communityflow.com
wake up and smell the coffee you're killing your body.
im not killing my body jen.... I dont smoke alot, and I dont drink alot. I dont even drink to get drunk alot of times, I just drink because I want something that I like, such as a smirnoff or a strawberry daquiri. I smoke just because I want to as well. Smoking weed helps me sleep TREMENDOUSLY and I have found no better alternative. I dont have any health issues because of drinking or smoking, not do anyone I know who has done these things for YEARS of their life. I am in perfect health, and if I was killing my body, I think I would have noticed by now.