Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

Many smartwatches, fitness and wellness trackers now offer sleep tracking among their many functions. Wear your watch or ring to bed, and you'll wake up to a detailed sleep report telling you not just ...

Automatic sleep stage classification using neural networks represents a significant advancement in sleep research, providing a robust alternative to traditional manual scoring methods. By leveraging ...

Is sleep tracking actually useful in daily life, or is it just data overload distracting you from what matters? After tracking my sleep every night for a year, I have some answers. Owen Poole, a ...

The bedside table of the modern health enthusiast increasingly features sophisticated technology aimed at unlocking the mysteries of sleep. From advanced rings and watches that monitor heart rate ...

Over one-third of Americans use some sort of device to track their sleep, according to the American Academy of Sleep Medicine. CREDIT: whitebalaance.space via Getty Images. Get the Popular Science ...

Colino is a contributor for TIME. Colino is a contributor for TIME. In a culture that’s highly goal-oriented, yet another form of performance anxiety has emerged: It’s called orthosomnia, and it ...

Deep sleep is one of the most essential stages of the sleep cycle, playing a vital role in how well you feel both physically and mentally. Often referred to as slow-wave sleep or delta sleep, this ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. I’m captivated by my new personal health ...

Dr Dean J. Miller is a member of a research group at Central Queensland University that receives support for research (i.e., funding, equipment) from WHOOP Inc, a smart device maker. Many smartwatches ...