My opinions of the Wii Fit - it's good to get you up off the couch, but if you're looking for a workout there are better "video games" for that. I found it to be pretty simplistic at times and like a previous poster said, didn't keep things going long enough to get your heart rate up.
BUT...it's better than nothing at all and can help people bridge into a bigger workout routine.
"There's no such thing as failure. There's only feedback. Stop judging yourself & start recognizing it for what it is, an entry point for learning. The truth is, if you're not failing then you're not really reaching & really trying. If you don't like the outcome of a situation, learn from it, make corrections & reapproach wiser & stronger until you achieve your goals."