You were looking for:
A Wii Workout: When Videogames Hurt
Continue to the storyThe new console has been wildly successful, selling out at stores and winning high marks from critics and game buffs. But as players spend more time with the Wii, some are noticing that hours waving the game's controller around can add up to fairly intense exertion -- resulting in aches and pains common in more familiar forms of exercise.