The Xbox One's new Xbox Fitness app, through which users can work out in their living rooms using Kinect, is off to a hot start with around 1.5 million workouts logged through the app since it launched in November.
"We've been pretty happy with the pick up," Microsoft Studios general manager for lifestyle entertainment Dave McCarthy told Polygon. "I'm feeling really positive."
Xbox Fitness features a library of interactive programs from fitness routines like P90X and Insanity, as well as fitness celebrities like Jillian Michaels and Tracy Anderson. Using Kinect, the app can even read a user's heart rate and determine which muscles are getting the most use.
The service is included with your Xbox Live Gold subscription through the end of 2014, but it's not clear if Microsoft plans to charge an additional fee thereafter. McCarthy declined to offer any insight on payment plans for the future.
Microsoft's numbers also show that the biggest group of people using the Xbox Fitness app are in their early 20s to early 30s. McCarthy also said that a "healthy" number of people have used the app more than once.
Finally, McCarthy teased that Microsoft is looking into bringing Xbox Fitness to other platforms within the "Microsoft ecosystem," though he didn't name any outright.
"We realize people don't just do stuff inside the home," he said. "We're starting to articulate with our teams: How do we bring that experience together across our ecosystem of devices, which I think is an interesting opportunity for us as well," he said.
"I don't know what the specific form of it will take right now, but we're definitely looking at phones, looking at tablets, looking at PCs and figuring out how we provide a consistent user experience across our devices," he added.