Leave it to some adult that doesn't understand videogames to point out the obvious.
Newsflash, active games like "Wii Play and Dance Revolution" don't burn enough calories to be considered a replacement for exercise. Also, it's Dance Dance Revolution... do your research.
This all comes from Colleen Greene, a wellness coordinator at the University of Michigan. She notes that these games only burn "60 to 70 calories an hour. This is nowhere near what an actual game or sport should be, which is three to four times that amount."
So, there you have it, go play a real sport. We'll see what she thinks about Wii Fit.
ConsumerAffairs: Active Video Games No Substitute for Exercise