The question is in the title folks. Like if you try to smoke loud (potent ganja) continuously non-stop, what would be the most likely cause why you'd stop... for me personally, I feel like you can feel yourself getting high within three minutes and so by then the anxiety/heart rate kicks in and controls the level I smoke but sometimes I feel like it's the lungs that say we're getting overloaded. So what usually would stop you if you've ever tried smoking as long as you could to get super blazed.