I don't feel like reading back to see who claims to puff every few minutes, but I'm dubious. I've been smoking a pipe almost daily for two and a half years, and I'm still improving. I consider myself a sipper, now. Every 15 or 20 seconds I take a tiny puff or two. If I we're to puff every 3 minutes, it would take me all day to smoke one bowl instead of the 1 to 1&1/2 hours it takes now. A puff every 3 to 5 minutes isn't even a goal for me. If I we're you, I'd shoot for a cool tasty smoke and leave the stopwatch in the desk drawer. If you want to be a long smoke competitor, ignore everything I just said.