Smartwatches and Stress: New Study Says Wrist Data Often Misses the Mark
A large new study tracking nearly 800 students over three months finds that consumer smartwatches—using heart rate and heart rate variability to infer “stress”—have almost no relationship with how people say they actually feel, though the devices do better at measuring sleep. The research, part of a programme aiming to build an early-warning system for depression, raises urgent questions about how Thais who use wearables should interpret stress scores, how employers and clinicians might rely on such data, and what researchers must do next to make physiological monitoring clinically useful Gizmodo The Guardian Leiden University.