YOO isn't just a fitness app. It's the daily fitness challenge that you play against yourself. Take the YOO Challenge and find out if there's a brand New YOO in YOU. In the game of YOO the NEW YOO competes against the OLD YOO in the ultimate fitness challenge! The New YOO piles up points when you're active. But the Old YOO earns points when you're not!
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