https://pinboard.in/u:marks/public/ recent bookmarks from marks 2011-11-13T15:47:51+00:00 http://www.nytimes.com/2011/11/06/magazine/running-christopher-mcdougall.html?_r=1&pagewanted=all marksrunning barefoot 100up exercise https://pinboard.in/ https://pinboard.in/u:marks/b:941db27ad618/ 2011-01-28T21:31:01+00:00 http://www.good.is/post/idea-a-gym-membership-that-charges-you-for-not-exercising marksmotivation behavior gym exercise https://pinboard.in/u:marks/b:8396ef70561b/