Re: Altitude effects?
Practice makes perfect. The more you smoke the better your gonna be able to do rings, and the more your gonna be able to drag in. higher altitudes have thinner air, so that might be aiding him, but that also means less O2, so his breathing may be more labored in theory as well.
Give a man a match, he will be warm for an hour. Set that man on fire he will be warm the rest of his life.