The Science Behind Wearables
Anna D. ZychA newsletter breaking down the science behind wearable health metrics written by Anna D. Zych, PhD - health science lead at Open Wearables by Momentum with neuroscience background from Max Planck Institute and Princeton University.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 6 | Founded | 4 months ago | Last Issue | a month ago |
| Active | |||||
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thesciencebehindwearables.substack....Latest Issues
Can Wearables Change Your Drinking Habits? What the Research Shows and Who Gets to Benefit
One of the central questions in digital health right now is whether wearables can do more than measure. Whether the data they surface, sleep stages, HRV trends, recovery scores, can translate into changed behavior over time, and if so, how....
How Well Can Your Wearable Track Sleep? What The Research Says
In the last episode, I covered the biology of sleep: what happens in the brain when we sleep, what the stages are, and how to distinguish a restorative night from a poor one. If you track your sleep with a wearable, the natural next questio...
How Accurate Is Your Apple Watch? What 82 Studies Actually Found
How accurate is your Apple Watch at rest?
TL;DR: At rest, Apple Watch heart rate is within roughly 7 beats per minute of a clinical reference, with a near-zero average bias.
The review reports a mean bias of -0.27 bpm when the watch is...
Decoding Sleep: What Your Body Does At Night?
What is sleep?
TL;DR: Far from being a state of “nothingness,” sleep is a highly active, neurobiological process of “cellular housekeeping” that restores the brain and the body.
I used to be the person who dreamt of functioning perfect...
HRV and HR Accuracy in Wrist-Worn Wearables
How does your wearable measure your heartbeat?
TL;DR: Wearables use light, not electricity, to detect your heartbeat, which has real consequences for how accurately they measure HRV.
The wearable on your wrist doesn’t read your heart t...
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Authors
The writers behind this newsletter.
I lead health science at Open Wearables, turning raw wearable sensor data into validated health metrics. My neuroscience background from Max Planck Institutes and Princeton University brings research rigor to consumer health data.
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