Maybe for normal people playing the Wii for a bit is not a workout. Well they can suck it because to me, it is. I woke up rather sore this morning from playing Mario cart and Mario Olympics. And, yeah, my arms hurt from vigirously moving the controller up and down to make my character run faster, but also my back for some reason. Likewise, last week when I did some Wii bowling my lower back was sore. And so it is that the Wii works more muscles than you think. Plus it is wicked fun.