> men in Japan who sleep less than six hours a night are 400-500% likelier to have a heart attack
Seriously? People who sleep less might be at risk of all sorts of health problems, but not necessarily because they sleep less - people generally sleep less because they're doing [strenuous or destructive activity]. And it's much more likely that partying / working late into the night causes health problems, rather than solely the lack of sleep.
Seriously? People who sleep less might be at risk of all sorts of health problems, but not necessarily because they sleep less - people generally sleep less because they're doing [strenuous or destructive activity]. And it's much more likely that partying / working late into the night causes health problems, rather than solely the lack of sleep.
Correlation ≠ causation