For the most part, this blog is a once-a-week affair written by yours truly. However, this week, in addition to my usual, weekly blog entry, I'm including a presentation made by someone else. This video is a great presentation of a simple message, and one that is echoed in this post I wrote about living longer, and this post about exercise. My colleague Dr Liz Kaltman, ND brought it to my attention. Take the next ten minutes out of your day to watch this video by Dr Mike Evans, MD and then go out for a walk.