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Cortisol Imbalance: High Cortisol Symptoms and How to Fix Stress Levels

Cortisol is a hot topic these days, especially as many struggle to manage their stress. You may also have heard of the term "cortisol face" or "moon face," which can be attributed to high cortisol levels. "Cortisol is a hormone produced by the adrenal glands that helps regulate your metabolism, blood sugar, inflammation, blood pressure and sleep-wake cycle," explains Dr. Mark Hyman, co-founder and CMO of Function Health, which offers a cortisol lab test. "It's most known for managing the body's

Most Cats Sleep on Their Left Side, and Scientists Think They Know Why

If you’re a cat owner, chances are you spend an unhealthy amount of time scrolling through your photo gallery, reviewing adorable photos of your cats for the thousandth time. While doing so, perhaps you’ve noticed that your cats appear to favor a certain side while sleeping. And if that happens to be the left side, new scientific research suggests you’re right. This could be a survival strategy for cats, according to a recent study published in Current Biology. In the paper, the researchers exp

Tired of restless nights? These sleep earbuds helped me doze off

Soundcore Sleep A20 ZDNET's key takeaways The Sleep A20 are Soundcore's earbuds designed for sleep, retailing for $180 The specially designed sleep earbuds are comfortable enough to wear the whole night through and are perfect for listening to ambient noise before falling asleep The noise masking isn't strong for dampening environmental sounds, so I wouldn't recommend these for people looking to silence bedroom noise. View now at Best Buy Trouble sleeping? Some people get themselves to bed by

What Is the Best Smart Ring for Health Tracking? I Tested 3 Popular Options to Find Out

The Oura ring was my favorite smart ring because its app was easy to understand and I liked some of the newer features from its latest software update. At the steep price of $299, this smart ring is made up of aerospace-grade titanium – one of the strongest materials on earth -- according to the site. Before I received my Oura ring, I was sent a ring sizer to figure out my ring size. Other smart rings did the same since sizing varies per brand. Once I received the Oura ring, I downloaded the Ou

Finally, a smart ring that rivals my Oura 4 with no subscription fee

ZDNET's key takeaways The RingConn Gen 2 is a subscription-free smart ring that monitors sleep, exercise, and stress. It monitors your sleep, activity, stress, and vitals, and it's got a marathon battery life. The only downside is the user interface feels underdeveloped. View now at Amazon View now at Ringconn more buying choices Most smart rings these days claim to offer marathon battery lives, but often fall short of their promise. Many smart rings claim to last a week's worth of battery, b

No silent night in sight? These sleep earbuds help me fall asleep in my noisy bedroom

ZDNET's key takeaways The Ozlo Sleepbuds, created by three Bose engineers, launched last fall, and they are the most useful sleep earbuds I've tested so far The sound is perfect for masking environmental annoyances that keep you awake, and the fit is comfortable and secure. The sleep tracking feature hasn't hit the earbuds yet, and setup took a few tries and several glitches, but once these work in your ears, they get you to bed instantly. View now at Ozlo View now at Amazon more buying choice

Enabling This One iPhone Feature Has Helped Me Get More Precious, Quality Sleep

I take sleep seriously and will honestly try anything that promises to help me get more rest. However, getting quality sleep doesn't have to involve a white noise machine or other device you have to buy with your hard-earned cash. In fact, as I discovered, it can be as simple as turning on a certain feature on your iPhone. Go figure. For the past five years, I've been getting better, longer sleep thanks to this one hidden iPhone feature. For those who also struggle with sleep and happen to have

These 4 Exercises May Be Key to a Good Night’s Sleep

When you’re exhausted, starting a new exercise routine may sound like a nightmare, but a new study suggests getting active could be the secret to a good night’s sleep. Scientists in China reviewed existing clinical trial data and found that certain forms of exercise, including yoga and jogging, that appeared to help people sleep longer at night. The findings suggest physical activity should be considered as a frontline treatment for insomnia, the researchers said. “The most important takeaway

Best Baby Monitors for 2025 as Tested by a Mom

What we like about it: The Dream Duo 2 includes the Owlet Smart HD monitor and the Owlet Dream Sock, which was FDA-cleared in 2023. The Dream Sock is the first and only over-the-counter medical pulse oximetry solution for infants. The package came with four different-sized socks that are meant to fit healthy infants weighing 6 pounds to 30 pounds. The socks contain a photoplethysmography (PPG) sensor, which is similar to what hospitals use to test your heart rate. The sock has velcro straps so y

This sunrise alarm clock helped improve my sleep routine

ZDNET's key takeaways The Hatch Restore 3 retails for $170 and comes in three neutral colors. It has a new design with bigger buttons and an upgraded app with more bedtime routines. The device is rather large, and you'll have to pay for a monthly subscription to utilize the app's whole experience. $169.99 at Amazon $169.99 at Target $169.99 at Best Buy more buying choices As a tech reporter, I've tested numerous products over the years, but one of my all-time favorites is the Hatch Restore su

This smart sock was one of my best purchases as a new mom

ZDNET's key takeaways The Owlet Dream Sock is an FDA-cleared baby sleep tracker that costs $299 and is FSA/HSA-eligible, though it is currently discounted for a limited time. It goes beyond your standard baby monitor by tracking your child's heart rate, blood oxygen, and sleep patterns with three alarms: a yellow incorrect fit alarm, a purple abnormal reading alarm, and a blue alarm when the sock is out of range or low battery. While false low oxygen and abnormal heart rate alarms are exceedin

I tested a subscription-free smart ring for a month - here's how it compares to Oura

ZDNET's key takeaways The Ultrahuman Ring Air is the brand's first foray into the smart ring space, and it's available for $349, no subscription required. The ring is great for hardcore fitness enthusiasts and recreational exercisers looking to use their health data to optimize their wellness routines. The app's user interface could be improved for easier access to daily logging functions. $349 at Amazon As one of the hottest smart rings on the market, the Ultrahuman Ring Air offers features

The best cheap fitness trackers for 2025

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . If you’re looking to get healthier without spending a fortune, the best cheap fitness trackers prove you don’t need to splash out on the best smartwatches to stay on top of your goals. Whether you're counting steps, keeping track of heart rate monitoring or trying to improve your sleep

The Best Pillows, Tested and Approved by CNET’s Sleep Experts

If you're not getting enough sleep or if your sleep quality seems low, there may be a few factors to blame. A better mattress may be the answer to your sleep woes, but a great pillow could also make a world of difference. You need to consider several factors to find the best pillow for your needs, including your sleeping position and your budget. Our sleep experts have five-plus years of hands-on (and heads-on) pillow testing, which we combined with brand and material knowledge, weeks of nightly

Forget the subscription: this fitness band has everything I need to track my progress

ZDNET's key takeaways The Amazfit Helio Strap is available now for $99. As a smartwatch alternative, the strap offers virtually all the same health tracking features via the robust Zepp app, with over a week of battery life. The fabric strap isn't made of exceedingly high quality materials, but luckily can be easily replaced. View now at Amazon Amazfit, makers of such smartwatches as the Bip 5 and the new Balance 2, just released its new Helio Strap, a fitness tracker that has all the core fu

I tested a subscription-free smart ring that rivals Oura - and it's $50 off for Prime Day

ZDNET's key takeaways The Ultrahuman Ring Air is the brand's first foray into the smart ring space, and it's available for $349, no subscription required The ring is great for hardcore fitness enthusiasts and recreational exercisers looking to use their health data to optimize their wellness routines The app's user interface could be improved for easier access to daily logging functions. $349 at Amazon For Amazon Prime Day, the retailer is offering the Ultrahuman Ring Air at a $50 discount, b

Oura Ring 4 On Sale for the First Time Ever, Amazon Crushes the Price for Prime Day

The Oura Ring 4th generation entered the market a few months ago, and it immediately became known as one of the most advanced smart rings in existence. Up until today, there was never a discount available on this product – either on Amazon or elsewhere. In honor of Prime Day, Amazon is going against the norm with the first-ever price cut on Oura Ring 4: With a 15% reduction on all sizes, you can now buy the Oura Ring 4 in silver, size 10, for $297 from $349. Other sizes are also on sale, but so

Your Galaxy Watch is getting a big upgrade. The best features coming out of Galaxy Watch8

Kerry Wan/ZDNET Samsung announced its eighth-generation Galaxy Watch lineup at its summer event in New York City on Wednesday. The Galaxy Watch8 lineup includes the base model smartwatch as well as the Galaxy Watch8 Classic with a rotating bezel. The Galaxy Watch8 is the thinnest smartwatch made by Samsung yet, with an 11% thinner design than previous devices, and brighter than its predecessors with a 3000-nit display. The smartwatches are built with Gemini AI for the first time, for handling m

Galaxy Watch 7 Is Almost Free, Amazon Clears Out Samsung Watches on Prime Day

Prime Day is a showcase for top electronics brands and this year is no exception. Whether you’re an Apple fan, a Samsung enthusiast, or loyal to Microsoft or Sony, there’s something for everyone. Samsung is making a splash with major deals across its lineup, from the Galaxy S25 phones to internal SSDs and, of course, the Galaxy Watch series. Right now, the Samsung Galaxy Watch 7 40mm smartwatch is available at its lowest price ever on Amazon, but you’ll need to be a Prime member to grab this ex

I tested the 4 most popular health trackers for a year - and they're on sale for Prime Day

The Oura Ring is, in my opinion, the sleep and health tracker to rule them all. Not only does it track your sleep, stress, activity, and more, it also creates helpful data illustrations that encourages healthy habits, whether that's a consistent bedtime routine, daily activity, or reduced alcohol consumption. Many users, myself included, have reported changing their drinking habits after seeing their heart rate's response to a few beers late at night on Oura's graphs. Earning high sleep scores

I found a subscription-free smart ring that rivals Oura - and it's $50 off for Prime Day

ZDNET's key takeaways The Ultrahuman Ring Air is the brand's first foray into the smart ring space, and it's available for $349, no subscription required The ring is great for hardcore fitness enthusiasts and recreational exercisers looking to use their health data to optimize their wellness routines The app's user interface could be improved for easier access to daily logging functions. $349 at Amazon For Amazon Prime Day, the retailer is offering the Ultrahuman Ring Air at a $50 discount, b

This smart sock was one of my best purchases as a new mom - and it's $100 off for Prime Day

ZDNET's key takeaways The Owlet Dream Sock is an FDA-cleared baby sleep tracker that costs $299 and is FSA/HSA-eligible, though it is currently discounted for a limited time. It goes beyond your standard baby monitor by tracking your child's heart rate, blood oxygen, and sleep patterns with three alarms: a yellow incorrect fit alarm, a purple abnormal reading alarm, and a blue alarm when the sock is out of range or low battery. While false low oxygen and abnormal heart rate alarms are exceedin

This sunrise alarm clock improved my sleep routine, and it's $30 off for Prime Day

ZDNET's key takeaways The Hatch Restore 3 retails for $170 and comes in three neutral colors. It has a new design with bigger buttons and an upgraded app with more bedtime routines. The device is rather large, and you'll have to pay for a monthly subscription to utilize the app's whole experience. $169.99 at Amazon $169.99 at Target $169.99 at Best Buy more buying choices The Hatch Restore 3 is $30 off for Amazon's Prime Day sales event, making it cost just $140. Also: The best Prime Day dea

The viral sleep earbuds that knocked me out are $35 off this Prime Day

ZDNET's key takeaways The Ozlo Sleepbuds, created by three Bose engineers, launched last fall, and they are the most useful sleep earbuds I've tested so far The earbuds are $35 off during Prime Day The sound is perfect for masking environmental annoyances that keep you awake, and the fit is comfortable and secure. The sleep tracking feature hasn't hit the earbuds yet, and setup took a few tries and several glitches, but once these work in your ears, they get you to bed instantly. View now at

This Oura Ring dupe is $91 during the first day of Prime Day

ZDNET's key takeaways The RingConn Gen 2 is a subscription-free smart ring that's on sale right now for $91 less. It monitors your sleep, activity, stress, and vitals, and it's got a marathon battery life. The only downside is the user interface feels underdeveloped. View now at Amazon View now at Ringconn more buying choices The RingConn Gen 2 smart ring is on sale for $91 off right now, a mighty fine deal that cuts the price of the smart ring by 30%. If the Oura Ring is out of budget, this

These 4 new Samsung Galaxy Watch features are tempting me to ditch my Apple Watch

Kerry Wan/ZDNET We're days away from Samsung Unpacked July event, where we could see new smartwatches and Samsung devices hit the market. Until then, the Korean tech giant is giving us some hints at what's to come on these new smartwatches with its One UI 8 Watch updates. These Watch features have arrived on several users' devices, according to a recent Reddit post in r/GalaxyWatch. Also: What to expect from Samsung Unpacked July 2025 From a running coach feature that appears to take notes fr

A subscription won’t fix the biggest problem I have with the Galaxy Watch

Kaitlyn Cimino / Android Authority In mid-June, a Samsung official hinted that the company might soon monetize parts of the Samsung Health experience, likely by placing future AI-enhanced features behind a paywall. Personally, I don’t mind paying for a service if it adds value to my life — what’s more valuable than good health? However, paying to unlock more features won’t fix the existing issues with the platform. To be fair, I don’t dislike what Samsung is doing with Health. The current expe

Best Pillows for Back Sleepers, Tested by a Sleep Expert

Regardless of your sleeping position, you need the right accessories to get a restful night's sleep. However, getting a new mattress can be expensive, so a supportive pillow might be a better option. The perfect pillow for back sleepers strikes the right balance between height and firmness. It should be supportive enough to ensure your neck and spine are properly aligned, but not so firm that it leaves you with a stiff neck. I have tested over 25 pillows during my time as a CNET sleep expert, an

The Best Mattresses for Heavy People in 2025, According to CNET Sleep Experts

With five-plus years of mattress testing experience, we use our different sleeping positions and body type perspectives to offer well-rounded, honest reviews. CNET staff -- not advertisers, partners or business interests -- determine how we review products and services. If you buy through our links, we may earn a commission. Nobody wants a flat, saggy mattress. Not only do they not feel good, but an unsupportive mattress can cause pain. There are plenty of better mattresses out there for those

Scientists Uncover Exercise Lifehack: Go to Bed

As if you needed another reason to envy—or loathe—morning people. Research this week shows that people who go to bed early are more likely to be physically active than those who crave the night. Scientists at Monash University in Australia led the study, which objectively examined people’s sleeping and exercise habits. Compared to late-night and typical sleepers, people who went to bed early tended to perform more physical activity the following day, they found. The findings also suggest that t