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Explore clear insights based on health data, research, and real-life examples — designed to help you stress less and recover smarter
Most read
July 23, 2026
Your heart doesn't know you're not running away from a lion. And that's the problem.
An elevated heart rate without movement quietly damages your cardiovascular system. Here's the mechanism — and what you can do about it.
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May 21, 2026
A new way to understand yourself: Daria Volkova introduces the Self-Discovery Experiment
Welltory introduces the Self-Discovery Experiment — a new way to understand what affects your energy in real time. Daria Volkova, Growth Product Manager, shares how it works.
Data stories
Throughout 2025 we passively measured the nervous systems of 18,734 Welltory users across all 50 states and DC. This series unpacks what we found: how the country's body responded to the events of the year.
September 16, 2026
When basic needs aren't met, resting heart rate is higher
An analysis of 19.1 million resting heart-rate readings found that material hardship, including food, housing, utilities, and health insurance insecurity, was strongly linked to higher resting heart rates across U.S. states.
August 4, 2026
The four-day workweek: what the data and research actually show
What the trials, the peer-reviewed evidence, and recovery data actually show
August 3, 2026
What a heartbeat knows about the place you live
Can a smartwatch detect economic hardship?
Make sense of your body signals
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Featured insights
September 12, 2026
Nervous system snapshot
A reading of your autonomic state at a single moment: how activated your nervous system is, how easily it settles, and how well its two branches are working together.
September 12, 2026
Measure HRV without a wearable
You can measure heart rate variability with your phone camera in about a minute — no ring, no watch, no extra hardware. What a camera reading gives you, how accurate it is, and when each app actually takes its measurement.
September 12, 2026
How accurate is HRV from a phone camera?
Camera, wrist, ring or chest strap — accuracy depends on where the sensor sits and whether you move. What the validation studies found, what they left out, and how to check your own.
Latest articles
Baby and child vaccine schedule in 2026: what's given at each age
October 15, 2026
Can an app actually coach you? What your data can and cannot tell you to do
October 13, 2026
How much activity is enough? Why 150 minutes a week is harder to count than it sounds
October 13, 2026
What happens to your health data when you put it in an app?
October 13, 2026
How to export your health data — and what to do with it once you have it
October 13, 2026
Which app combines data from Apple Health, Garmin, and Oura?
October 13, 2026
Is Welltory accurate? What independent research actually says
October 13, 2026
Heat intolerance: why you suddenly can't handle heat, and what it points to
October 13, 2026
Dysautonomia symptoms: the full list, why they look unrelated, and what to do next
October 13, 2026
Coat hanger pain: the neck and shoulder ache that comes from standing up
October 13, 2026