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Today

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Open the iPhone app to take your first bio-age reading and start logging your daily protocol. Once you have a reading, this page populates with your live trajectory.

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Bio age — years

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Chrono —

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Today

latest readings

Sleep

—h

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Activity

—steps

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Heart

—bpm

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VO₂

—ml/kg

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Daily protocol

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Your trajectory chart appears once you have at least two bio-age readings.

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Community feed What people are talking about today Learn library 24 tracks · 200+ short lessons Protocols Run an N=1 trial on your own data

Want the full experience? The iPhone app captures live wearable data, AI doctor context, and per-domain trends behind every reading.

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