If you've got an hour to workout, which is better?
So I've got an hour to work out. My gym is 15 minutes away, which means I really only have a half hour to work out there. In a half hour, I can do the elliptical and burn about 500 calories. The alternative is going for an hour long 3 mile walk. I'm too overweight to run or jog right now, so walking is the only option. If…