Wearables (Biohacking)
Rings, straps, and watches — what they measure, what they miss, and how to use them without overfitting.
¶ Wearables (Rings/Straps/Watches)
¶ What wearables are best at
- Trends in resting heart rate and activity
- Sleep timing consistency
- Rough recovery signals (when used consistently)
¶ Common pitfalls
- Over-interpreting sleep stage charts
- Comparing different devices as if they’re identical
- Changing the algorithm output instead of the underlying behavior
¶ Recommended workflow
- Pick 1–2 primary metrics (e.g., sleep timing + resting HR trend).
- Use weekly averages.
- Treat the device as a feedback loop, not a judge.
See also:
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