Last week we started an experiment. We asked you what questions you'd like to have answered. In our first video episode, Dr. Sprouse discussed whether running will cause arthritis. This week, we continue with a new question. This was a rather timely submission, as Dr. Sprouse just wrote an article on the same topic for TheFeed. Check out the video discussion below and the complementary article on the Eat Smarter Blog at TheFeed.