Thanks for the new thoughts Murray! When I was younger I truly enjoyed running I was always a strong miler in pre high school before I started packing on weight to play football, and I always got a rush out of pushing myself hard. I have toned down my running to just sprints and 1/4 mile bursts for fear that any distance might hurt my knees and feet, but I have contemplated picking it up recently to add to my cardio workouts. This info might be the necessary motivator I needed to start doing some distance again and lose the last 10 or 15 problem pounds, so thank you!!