Smartwatches' Sleep and Stress Tracking: Are They Reliable?

TL;DR Summary
A study from Leiden University found that stress and fatigue readings from smartwatches like Garmin Vivosmart 4 are often inaccurate, with sleep tracking being relatively more reliable, highlighting limitations in current wearable sensor technology.
Topics:technology#accuracy#health-and-technology#sleep-tracking#smartwatches#stress-sensors#wearables
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