As the others have said, they're completely different.
Remember that the KIND of exercise you do really doesn't matter; Burn a hundred calories running, or a hundred calories on an elliptical, and you'll lose the same amount of weight.
Writer, mother, wife, and breadwinner. I love to run, but running doesn't love me, so I'm switching to my low-impact bike.
I'm not pregnant, just fat: My blog. fatnotpregnant.blogspot.com/
| current weight: 185.0