Such as unreasonable diet, smoking, alcoholism, sedentary inactivity, promiscuity, drug abuse, drug dependence, driving by plane without wearing a seat belt, etc.
According to the estimate of the World Health Organization, in 1992, 60% of the global deaths were caused by unhealthy lifestyles and behaviors, of which 70% ~80% were in developed countries and 40% ~50% were in developing countries. Among the top ten causes of death in the United States, bad behavior and lifestyle factors account for an increasing proportion of death factors. Through 30 years' efforts, the death rate of cardiovascular diseases in the United States has dropped by 50%, of which 2/3 is achieved by improving behavior and lifestyle.