“Wii Fit,” which lets you use the game platform as an exercise tool, is already a runaway hit in Japan and Britain. It was recently released in the United States.
The newest component of this game is a balance board — a motion-sensitive platform that looks like a double-wide bathroom scale. It can detect how much weight you place on each foot and which way you’re leaning.
Before you start playing, you create a profile, entering your height and age. The game then measures your weight, your body mass index and your “Wii Fit age.” Once you’ve been assessed, you then start your workout, which can include yoga, strength training, aerobics and balance games.