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Podcast: γ¬γ’γΈγ§γθ±δΌθ©± Daily News Article Podcast
Episode: Sleep-tracking devices have limits. Experts want users to know what they are
Description: Your watch says you had three hours of deep sleep. Should you believe it? Millions of people rely on phone apps and wearable devices like rings, smartwatches, and sensors to monitor how well they're sleeping, but these trackers don't necessarily measure sleep directly. Instead, they infer states of slumber from signals like heart rate and movement, raising questions about how reliable the information is and how seriously it should be taken.
The U.S. sleep-tracking devices market generated about $5 billion in 2023 and is expected to double in revenue by 2030, according to market research firm Grand View Research. As the devices...