They are engaging in consistent (roughly hourly) physical activity (significant amount of walking) in order to go smoke, while the non-smokers are not. The que

They are engaging in consistent (roughly hourly) physical activity (significant amount of walking) in order to go smoke, while the non-smokers are not. The question here is not whether smoking is good for you, which it obviously isn't. It's whether, in this case, the benefit of being forced by addiction to get up and engage in light physical activity once per hour outweighs the carcinogenic effects of the tobacco consumed during smoke breaks.