The Xbox One has been home to nearly a million and a half virtual workouts since the console launched in November, thanks to the Xbox Fitness app, according to Microsoft.
"We've been pretty happy with the pickup," said Dave McCarthy, general manager for Lifestyle Entertainment at Microsoft Studios. "I'm feeling really positive."
While the success of the program continues to fuel tweaks and new content, McCarthy declined to say what it will mean for the cost of the service in the coming year.
Xbox Fitness is a monthly fitness subscription service that, at least until the end of the year, is included for free with the paid Xbox Live Gold membership on Xbox One.
The service features a slew of video workouts from popular fitness trainers like Jillian Michaels and Tracy Anderson, and programs like P90X and Insanity. The app blends the fitness video with the technology of the Xbox One's Kinect camera and microphone array to not just play the video, but also keep an eye on how the person working out is doing.
The peripheral and software measures a person's pulse using micro-fluctuations in the blood coursing through their face. It also tracks the energy and tempo of a person's workout and uses muscle mapping to make sure the exercises are being performed correctly.
The idea of using the Kinect to track movement and ensure it's correct started with the Xbox 360 and its less advanced Kinect, McCarthy said.
That earlier system used a library of 200 captured moves to track performance, he said. Xbox Fitness uses a catalog of more than 2,000 and that continues to grow.