Extreme nicotine tolerance

Video discusses how some people develop extraordinary tolerance to nicotine, smoking levels that most people think are impossible to reach and at times resulting in damages and possibly life threatening complications at quite young ages.

Related resources:

Amount smoked

A thirty year success story
Talks about the experiences of one of my clinic graduates named Barry who was a four pack a day smoker

I’ll come for reinforcement when I need it
Mentions Joe, one of my clinic graduates who was a five pack a day smoker.