I have the Wii Fit game. If you really work it, you will sweat, get tired, and be sore later. However, I don't think it will compare to a gym and the equipment you find there. The Wii Fit does have a graph tracking your weight, which is kind of nice. You can set a goal, and a time frame for, and it will give you advice for reaching it. So, it's pretty cool for that aspect as well.

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Put me on wheels and I'll turn tricks.

Clever? Nah, I ran out of that years ago. But if you find this, let me know, k?
"The road goes ever on..." ~ Tolkien

In memory of my friend skip...
Go then, there are other worlds than these