A new research study suggests too much running is tied to shorter lifespans. Research by Dr. Martin Matsumura of the Cardiovascular Research Institute seems to lead to lead to conclusions that high mileage runners and people who do not run have shorter lifespans than moderate runners. The press reports look like a number of factors were considered. I’m sure there is research that contradicts these findings. However, as someone who hasn’t run, or been chased, since his last PT test in 1996, it seems like great, I told you so, research.