Quote Originally Posted by t3chyo
I'm not going to go down into scientific detail, but as far as smoking weed goes i've heard it to help improve the cellias(?) which help clean out the tars in yourl ungs as opposed to cigarettets which damage cellias making your lung get tared up. Someone please correct me on this if i'm wrong.
Actually, your lungs' cillia are much akin to braincells in that once you lose them you can't really get them back. So, once you kill off a lot of your cillia (which is the cause of smoker's cough) you can't repair them to anywhere close to the level they once were. BUT, you can increase your vital capacity, which is the amount of air you can inhale, and also increase your VO^2 max.

Basically, you can never fix the filtering mechanisms in your lungs, but as long as you keep up the aerobic exercise you can increase your bodies ability to absorb oxygen which will stop you from being out of breath etc.