I used to smoke abour 10-20 blunts a day with all my roommates and after a while my lungs started feeling like shit. I would always hack up grey-green phlegm and feel out of breath and tired all the time.

My solution was to buy a vaporizer. I got a hands free, vapor brothers for around 140$ on discountworldonline.com. I Know it seems like alot of money but it's so fucking worth it. If you're worrried about your lungs I'd HIGHLY reccomend investing in a vaporizer. Not only does it get you fucked up out of your mind, but my lungs feel great. I still smoke with my friends, but for personal use I only vaporize. I feel great, not only because I'm riding a huge vapor high right now but because I'm healthy again.

It's really worth it, you use less weed for the THC you get (although you don't get the buzz from burning all the chemicals, you just mainly get THC and some of the other goodies) you can use the weed you've vaporized with in baking. For me 1-2 weeks of vapor duff (brown vaporized weed) makes a tin of brownies, which get me high as hell.