That is quite the equation. Traditionally, I have not been a calorie counter but I have been reading some articles which piqued my interest. I have been using Spark People to log my miles. Today I rode my bike 8 miles and according the their formula, I burned 799 calories. It just seemed like I had worked awfully hard for such a minimal calorie count. I'm happy with my bike riding gains and as I said, I'm not really overly concerned about the calorie thing but it just seemed that maybe Clydes should get some type of bonus.