The rhythm of a healthy heart may seem steady, but underneath that regular thump lies a rich, ever-changing pattern. These beat-to-beat changes, known as heart rate variability, or HRV, reveal much ...

New research links warmer nighttime temperatures to impaired heart recovery in older adults, highlighting a critical health ...

New research suggests that older adults experience lower stress levels when their bedroom is kept at 24°C (75 °F) during sleep. Maintaining a bedroom temperature around 24°C (75.2°F) or lower during ...

Sleeping in a warm bedroom may strain the ageing heart. A new Australian study links night-time temperatures above 24°C to ...

Smartwatch makers promise to turn your wrist into a sleep lab, translating tiny movements and heart rate blips into colorful ...

Sleep affects multiple physiological systems; however, a comprehensive overview has not yet been reported. A study published in Nature Medicine analyzed sleep characteristics in adults and their ...

The study by Griffith University in Brisbane finds that a room temperature while sleeping of more than 24 degrees Celsius ...

Sleep is one of the core metrics all smart rings track. They typically offer a daily sleep score out of 100, which takes into ...

With the category poised for further growth, two Bloomberg reporters took a closer look at four current leading smart rings.