In the overall population, smoking prevalence was 37.6%, with 23.1% being heavy smokers (=21 cig/day). Smoking prevalence did not differ significantly between sexes, but heavy smoking was more prevalent in males. Age at smoking initiation was negatively associated with the daily number of cigarettes smoked (smoking volume), but only in females. The prevalence of health-enhancing PA (high PAclass) was only 14.2%, while 45.4% of the study population was classified as insufficiently active (low PAclass)