Wearables and your health data

5 parts, in order. A new one goes up every morning at 11:30, so this list grows until the series is complete.

  1. What a Fitness Band Can and Cannot MeasureThe tiny sensors under the strap, and the honest line between what a band measures and what it is quietly estimating.
  2. Band or Smartwatch? How to Decide Before You BuyJudge a wrist device by how you will actually wear it, not by the feature list printed on the box.
  3. The First Hour With a New Fitness Band or WatchPairing, profile details, wrist choice and strap tightness decide whether every number you see for the next year makes sense.
  4. Why Your Step Count Never Matches Your Friend'sOne walk, two devices, two different numbers, and why chasing a round daily target misses the point entirely.
  5. What Your Watch Is Doing When It Reads Your PulseA green light on your skin reads a pulse well when you are still and badly when you are working hard.

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