Forger takes a more favorable view toward the devices, which he says help keep the overlooked importance of sleep front of ...

Millions use sleep-tracking devices, which have become increasingly accurate at gauging sleep. Experts say they highlight ...

Whether it’s an Apple Watch, a Fitbit, an Oura Ring or one of innumerable other competitors, health and fitness trackers ...

Millions use phone apps and wearables to track sleep. These devices infer sleep states from movement and heart rate, leading to questions about data reliability. The US sleep-tracking market is ...

Sleep trackers promise to turn the mystery of the night into clean numbers and colorful charts. Yet as the devices have ...

Better sleep isn't just about going to bed earlier. These smart gadgets target tracking, routines, and common sleep ...

Wearable health devices now track heart health, stress, glucose, fertility, and sleep, turning smart wearables into everyday tools for preventive care.

There’s so much advice out there about how to fall asleep, how to stay asleep, how many hours of sleep you need, what to eat before bed for better sleep—you could spend months, if not years, trying ...

China-based Sleepace, which has developed a sleep tracking device, raised $7 million in a round led by retail chain Luolai Home Textile with participation from ecommerce giant JD.com, according to a ...

San Francisco-based startup Hello has raised $20 million in a round led by Singapore-based investment firm Temasek for its sleep tracking, bedside orb, Sense, according to the Financial Times. This ...

Omega Chen purchased a Garmin watch to track his heart rate and other metrics when he exercised, but it also measured things like his resting heart rate and “sleep score” every day and night. Yet no ...