I got one a few days ago (Wii Fit Plus) and thought since I go to the gym every day before work that I wouldn't really feel it. Wrong! I really feel it all over. I do 50/60 lb arm weights at the gym, but the boxing hit other muscles that the weight didn't hit. My tummy and calf muscles are a bit sore too. I do 135lbs on the leg press at the gym and thought my legs wouln't feel it. I was pleasantly surprised. The reason I got it was that I thought it would be a fun activity to do in the evenings instead of watching TV and when I get home at night, I don't want to get redressed and go back to the gym for classes.
I love the yoga and even though the form is not 100% correct, it's worth doing. Like the Aerobics too. But what I really like is the goofy games. I may not break a sweat with them, but it's a lot better than just sitting like a lump watching tv. Fun family activity too. My (grown) son came over yesterday morning and we had so much fun just looking stupid and laughing.


A video of me doing that and the hula-hoop thing and I'll have to get a new identity and move to Mexico along with you!! 

if his weight drops below mine.