Several people sent links to the running death of Ryan Shay. Mark Sisson sent it and so did PaleoGal. Mark also sent a link on Alberto Salazar, a premiere runner who has run himself close to death several times. He had at one time been described as “a man who once heard testers declare his cardio output to be the greatest they had ever measured.” Note also the severe loss of muscle mass associated with marathon training, one that Salazar tries to avoid in his trainees. No wonder they look like ghosts. When I saw some of the participants of our recent Huntsman Senior Games Marathon in St. George, they looked like the walking injured and near dead. If I can be a bit whimsical about it all, remember my Top 10 Reasons Not to Run Marathons. One of my most important (and criticized) posts. It may be sinking in. The evidence is close to overwhelming.