Following the successes of Wii Fit and, so far, EA Sports Active, Ubisoft have happily jumped onto the exercise train with their own attempt - Your Shape, a Wii title that, curiously in light of Microsoft's Natal announcement, uses a USB camera to scan players and track their motion.
The game allows use of the Wii remote to select options, etc., but generally uses a hands-free approach so that users that utilise their own work out equipment. Workouts will be adjusted according to how you're responding to them.
That's about all we know for now. Here's the debut trailer: