First details of Microsoft's proposed Xbox Fitness subscription leaked yesterday. The company later confirmed the program, with a brand new trailer showing exactly how celebrity trainers will yell at you.

Coming exclusively to Xbox One this holiday season, Xbox Fitness will give instant access to videos from P90X, Insanity, Jillian Michaels, Tracy Anderson, and more. The program will be free for all Xbox Live Gold members until December 2014. Afterwards, a separate Fitness subscription will be required (in addition to Xbox Live Gold).

Using the upgraded Kinect for Xbox One, Fitness will supposedly "track the quality of your performance," a key feature that Insanity's Shaun T recommends. "What makes Xbox Fitness so innovative is the feedback it gives you. The Kinect sensor can evaluate your form, tell how high you’re jumping, how hard you're punching and even read your heart rate," he said in the announcement. "It's that little missing piece of validation that hasn't been possible for home fitness products before. Xbox Fitness completes the puzzle."