coughing for me is probably due to the fact that I smoke cigs. back in the day when i barely smoked cigs I could take mondo hits all day long. Now I can still take mondo hits without coughing, just not as many untill the coughing fit begins.

It also depends on the harshness of the smoke. I swear this last stuff I picked up doesn't seem like it was dryed properly. It was still pretty dank and was/is an alright smoke.