Run, it's good for you

According to a study from the Stanford School of Medicine who tracked 500 runners for 21 years, elderly runners "were younger, leaner, and less likely to smoke" than nonrunners. 19 years into the study 15% of the runners had died compared to a whopping 34% for nonrunners.

If that doesn't convince you to start running, I don't know what will.

Source: Archive of Internal Medicine.