I think I seen it before, but I'm not sure. I'm trying to figure out how many calories I'm burning while I ride. I have one of those digital ones, but I don't think it's accurate. I can bike 10 miles at moderate speed the whole time and only burn 160 calories.
I'm 5' 6" 171 (small frame), so I need to lose about 20 pounds. I know I need to give up beer, but it's a working process.