Nintendo's Wii Fit has the potential to become the breakthrough product in the oft-ignored exercise-game genre. The technology and execution weren't ready 20 years ago when Nintendo tried to ...

Here's the thing: I'm supposed to be training for a triathlon — a race that just so happens to be a mere three months away. But have I done a lick of exercise in preparation? As a matter of fact, no.

Nintendo's Wii Fit has the potential to become the breakthrough product in the oft-ignored exercise-game genre. The technology and execution weren't ready 20 years ago when Nintendo tried to ...