DDR for weight-loss

I started playing Dance Dance Revolution (DDR) at the age of 17 with the very first version that was released to the United States, DDR Version 1.5. The first time I saw the game was at Gameworks arcade in Seattle, where tons of people were crowded around the DDR machine to watch different players dance. At this time, I was a senior in high school and weighed about 235 lbs. Four and a half years later, I now weigh close to 140 lbs and I would've never guessed how much that trip (OR a video game) would affect me with my health/weight, and in growing to be a better, more self-confident person.