The first times I smoked were great, there was no doubt I was gone. But sometimes when im smokin I get the feeling that weed just isn't as strong as I remember it being... and then around bowl 2 im feelin great again. Just smoke more, its really the only thing I can suggest. I have a low tolerance which is why 2 bolws is good for me but keep going until there is no doubt your blazed. It will hit you HARD one of these times.

oh and I used to wake up with a cold every time I smoke but that doesn't happen anymore.