text: If HotT in Pink is right, it doesn't seem worth it!\n\nI think crunches are more for building muscle than burning calories or fat.\n\nTry DDR Max - it has a workout mode that estimates how many calories you've burned. I tried it once and I burned up about 500 in half an hour.\n\nBy the way - I'm no authority on the subject of diet and/or excersize...