Wii Fit Taking Exercise to the Next Level

by Kim PainterUSA TodayAre Wii fit yet? As a nation, we definitely are not in good shape. But 10 months after the launch of Nintendo's Wii Fit -- the first hit video game marketed as an exercise tool -- there are signs that, with the help of gaming systems, some of us might be making progress.Wii Fit was the bestselling video game in the nation in January and February and had sold more than 6