Eh, I smoke 2 chill-ums of some pot from new york and was still fucked 4 hours later, and I slept from 1200 until 1230. I was gonna crack a few cans open but I couldn't keep my eyes open.
Ask my friend. HE smoked too much of the northern lights one day, and told me he forgot how to inhale at will. He was having a hard time smoking the pipe.