This phase of the study included 14 days of sleep tracking through a sleep diary, an actigraph (i.e., a research-grade sleep tracker worn on the wrist, not unlike a smartwatch), and two days of ...

You've probably heard of the phrase REM (rapid eye movement.) But you might be less clear on the crucial role this sleep stage has on our overall health and wellbeing. During each night ...

It's common to describe getting a good night's rest by saying we've had a really deep sleep. But in reality, actual deep sleep is just a portion of the 7 to 9 hours sleep that's recommended for ...

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 Merijn van de Laar, a Dutch scientist who has studied and treated sleep problems all his career, tells Anna Bonet the ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Whether it’s an old-fashioned, a hot toddy ...

Struggling to get a good night's rest? You're not alone. Fortunately, Sleep Week 2025 has inspired a bevy of mattress sales and deals on the market's best sleep products, all of which are designed ...

Mar. 5, 2025 — For the first time, researchers have been able to observe how the pupils react during sleep over a period of several hours. A look under the eyelids showed them that more happens ...

An apnea is defined as a pause in breathing for at least 10 seconds. Obstructive sleep apnea, also called OSA, causes you to stop breathing in your sleep for several seconds, up to many times an hour.

Whoop has begun rolling out an update to its sleep tracking that improves stage analysis and awake recognition. The brand detailed the new sleep algorithm in a blog post last week, though the ...

Feb. 25, 2025 — Blue-enriched light can improve sleep quality and daily activity in older adults living at home, according to new research. Researchers found that ... Impacts of Workplace ...

Clocks spring forward and an hour of sleep is lost while an extra hour of sunlight is gained. The week when Daylight Savings Time goes into effect has been known as Sleep Awareness Week ...