What is WHOOP doing with its 50 billion hours of health data, according to Will Ahmed?

Will Ahmed said WHOOP is building its own foundation models on top of open source models, trained on just over 50 billion hours of continuous physiological data plus uploaded blood tests, medical records and journal entries. He said early signs suggest the models may predict that a biomarker, such as cortisol, is out of range without measuring it directly, so the app could recommend one targeted test. Ahmed said WHOOP does not sell the data to AI companies or anyone else.

• Ahmed said just over 50% of members log the journal every day.
• Ahmed said members open the app about eight times a day and 80% of the member base interacts with the AI coach.
• WHOOP set up a dedicated team on travel and time zones because it is a popular coaching use case.

Source: our own transcription of the episode. The full conversation is on All-In with Chamath, Jason, Sacks & Friedberg (2026-10-29). Read the whole episode summary →

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