Google Research · Wearable health world model

Coachable health age and SensorWM

Google Research introduces an investigational framework that turns passive wearable signals into a modifiable 'coachable health age' metric. It pairs this with SensorWM, an action-conditioned world model pre-trained on 2.28 million person-weeks of Fitbit data, which simulates 12-week 'what-if' habit trajectories for a language model coaching agent. The page reports validation across three cohorts, including disease prediction in All of Us (n = 22,748) and outperforming TimesFM on forecasting, but gives no public release or licence details.

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