At the "Google Made 2025" launch event, Google announced the introduction of a new AI coach feature for its Fitbit platform. This feature is based on Google's own Gemini model, aiming to provide personalized fitness, sleep, and health consultation services for users. The feature will be released in preview form in October this year for Fitbit Premium users in the United States.
This AI coach integrates three roles: fitness trainer, sleep coach, and health advisor, and will become part of the new Fitbit app, compatible with the latest Fitbit and Pixel devices. Its core advantage lies in creating and adjusting dynamic personalized plans based on real-time user data. For example, if a user's "readiness score" drops due to poor sleep, the AI coach will proactively adjust their weekly training schedule. In terms of sleep, the coach will use new algorithms to identify the user's sleep patterns and even help alleviate jet lag.
In addition to fitness and sleep, the AI coach can also provide comprehensive health insights. It can access real-time metrics from Fitbit and Pixel Watch, and integrate data from third-party devices such as smart scales or blood glucose monitors through Health Connect and HealthKit. Users can ask health-related questions via the built-in Q&A feature, such as "What exercises are best for weight loss?" The AI coach will provide personalized and scientifically supported responses and actively push health trend information.
Google stated that the new Fitbit app has been redesigned around coaches and artificial intelligence, with improvements including more intuitive data visualization, easier navigation, and a new dark mode.
Although the application of large language models in the health field is growing, for example, OpenAI's GPT-5 model is also seen by its CEO Sam Altman as a key use case for solving health issues, Google's Fitbit coach has unique advantages. It combines the AI capabilities of Gemini with real-time data from wearable devices such as Fitbit and Pixel Watch, avoiding the risk of "AI hallucinations" that may occur with a "pure model" approach. Google clearly stated that this preview version is not a medical device and advises users to consult a professional doctor when they need medical advice.
