Harrison is a little busy this week so I invite Michael Martin C.S.C.S etc. to do a spot again on the show, this time reviewing a NYT 's article that came out around Thanksgiving on saving your knees. This article caught out eye because it espoused the notion that switching from running to a conceivably lower impact movement like biking, swimming could counterintuitively actually harm the knees. The article also lists ways to promote knee health and prevent injuries.