Well this explains alot. If you are 12 and smoking pot I think you should give it a rest and go enjoy your childhood let your brain develop (you are in a crucial brain development stage) smoking pot will only hinder this a bit. I would wait 3-4 yrs before you start smoking.
No, not good at all. He'll become addicted to it. Not physically, but psychologically. And heavily too. It happened to my friend's little brother, and now he's turned into an annoying little fuck because whenever we have weed he begs and begs to smoke.
What can happen? No offence, but judging from your grammar, it makes you dumb (it stunts your growth, as said before 12 is when you are going through lots of growth) I know a guy who started smoking at 10, hes 19 now and is quite possibly the least intellegent person on the planet.
I don't agree with smoking that young, but trying it at that age is different from straight up smoking twice a week during recess. I'm not telling anyone what to do, but Jesus Christo there has to be limits.
it won't harm you in the way that there's no way to over dose or die on it but you might get a bad cough or lung problems if you smoke a lot. i tried it like once when i was 12 but i didn't actually get high until i was 13 which i think is an okay age, of course it depends on the person