Edit: was too high and forgot to quote Chainer's post I meant to respond to. Meant this my bad lol.
"That's tar and a lot of carbon, this specific type of carbon is cancerous (all are, to varying degrees, if I understand correctly). The point is, this is one of the most harmful ways of getting high of THC/CBN/Ds.
Also if you don't understand the difference in resin and extracts then you really haven't compared. I just went through 3.5 grams of Grapefruit (100% sativa) earwax hash and it was absolutely stunning, compared to the poor quality and dirty feeling high you get from resin. You can taste the difference. Also, health wise, the difference is VAST. Extracts are the pure product, often whipped, and purged for BHO etc - it is much more friendly to your body and lungs then Resin. "
Ew that really freaks me out man, I didn't know it was that bad. I used to do it a lot when I was young didn't work and desperate...I remember I'd hack up a storm for 5 minutes or so and afterwords I'd spit up a nasty yellow snot lol. It's hard to enjoy the effects when stuff like that's happening ha.
I'm glad those days are over.