5 to 10 minutes a day of running at moderate speeds, is associated with markedly reduced risks of death from all causes and cardiovascular disease

This observational study has the typical limitations of preliminary research—interventional studies are needed to establish causation. The cohort is primarily non-Hispanic White, college-educated, middle-to-upper socioeconomic status, with most participants having a BMI < 30 kg/m². The findings show decreased mortality when participants ran at least 6 miles/week (~10 km/week) at a minimum speed of 6 miles/hour (~10 km/hr). However, running habits may be confounded by other lifestyle factors such as nutrition."