I won’t lie: I don’t get as much exercise as I need to. I’m 6’1 and 213 lbs, not an ideal weight. Other relevant details about me are that I am caucasian, male, and 27 years old.
Now, suppose there is a person identical to me in every respect *except *that the person has a pack-a-day habit with regular filtered cigarettes, and the person gets the recommended amount of exercise each week. All things being equal, would this person likely be healthier than I?
To broaden the scope of the question, how much does a smoking habit negate other healthful activities?