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Perinatal Depression: What It Is and How to Cope


Perinatal Depression: What It Is and How to Cope

Britney Spears announced she's expecting a baby on Instagram this week and also revealed that she had perinatal depression when she was pregnant previously.

"I have to say it is absolutely horrible," Spears wrote. "Women didn't talk about it back then." 

Perinatal depression is a mood disorder that can start during pregnancy or after childbirth, while postpartum depression specifically describes depression someone develops after giving birth. While the direct causes of the disorders vary, the anxiety, sadness, apathy and other emotions many new or soon-to-be parents feel can be difficult to describe to loved ones or bring up at a doctor's appointment. 

Despite this, it's a common medical experience during pregnancy or the postpartum period. According to the American College of Obstetricians and Gynecologists, one in seven women will experience perinatal depression. 

Julianne Zweifel is a clinical psychologist and adjunct professor at UW Health in Madison, Wisconsin who works with people who have postpartum mood dysregulation, which can vary from postpartum "baby blues" to postpartum depression. In a September interview with CNET, she said the pressure to feel a certain way can lead new parents to feel inadequate when they don't feel what they perceive to be the "right" feelings.

"I like to describe it as [being] analogous to having only seen black-and-white photos all your life, and suddenly [you] see color photos," Zweifel said about new parents' expectations. "Like, 'wow, I didn't even recognize this dimension existed.'" 

The hormonal surges and lifestyle changes pregnancy and new parenthood bring can have dramatic effects on someone's mental health. If you're feeling society's expectation of how pregnant people and new parents should feel doesn't reflect your experience, here's what to know about perinatal and postpartum depression.

Depression during pregnancy 

During pregnancy, your body goes through huge changes as it accommodates a new body and prepares for the marathon of childbirth (and parenthood). On top of the physical and hormonal changes, pregnancy can put strain on relationships and cause financial stress. But like depression in people who aren't pregnant, it may also have genetic causes. 

According to the Cleveland Clinic, you're more at risk of experiencing depression during your pregnancy if: 

  • You have a history of depression or premenstrual dysphoric disorder (PMDD, or severe PMS that disrupts daily life).
  • You became pregnant at a younger age (risk decreases as age increases). 
  • You live alone or have limited social support.
  • You're experiencing marital problems.
  • You have mixed feelings about your pregnancy.

The pandemic may also have increased the rate of anxiety or depression during pregnancy.

While depression can strike at any time in life, many people experience anxiety or depression for the first time while they're pregnant. Because depression can affect the health of the pregnant person and growing fetus, it's important to see your doctor or a mental health professional if you're experiencing symptoms of depression for at least two weeks, the ACOG says. Symptoms include, but aren't limited to: 

  • Depressed mood most of the day, for most days. 
  • Feeling guilty, hopeless or worthless. 
  • Loss of interest in work or activities. 
  • Sleep problems (sleeping too much or having problems going to sleep).
  • Big changes in appetite (losing appetite, or eating much more than normal).
  • Having trouble concentrating or making decisions. 
  • Thinking about death or suicide.

Treatment for depression during pregnancy may be similar to treatment for people who aren't pregnant, including talk therapy or medication, according to the ACOG. 

Resources and an expert hotline to call for people experiencing depression during pregnancy and the postpartum period can be found at Postpartum Support International. An analysis of anxiety and depression in pregnant people during the pandemic found that increased social support and physical activity reduced the likelihood of developing either disorder during pregnancy.

Postpartum blues vs. postpartum depression

Zweifel said as many as 65% to 70% of people will experience postpartum "baby blues," or mood swings that begin roughly within a week of delivery. "Once you start using numbers like that, that means that's the normal response," she said. But baby blues will resolve on its own, usually getting better in about seven to 10 days. If feelings of classic depression persist without showing signs of getting better after about two weeks, Zweifel said, it's likely postpartum depression.

Symptoms of postpartum depression can be more intense and last longer than baby blues, and can potentially interfere with your ability to care for your baby or handle daily tasks, according to the Mayo Clinic. PPD can manifest differently and may include typical symptoms of depression, such as severe mood swings, feelings of worthlessness and a withdrawal from family and friends, but may also include feelings specific to your role as a parent, including feelings that you're not a good parent or thoughts and fears that you'll harm your child, per the Clinic. 

Zweifel wants to clear up the misconceptions about PPD and the idea that it makes people harm their child. 

"Somehow, our society has assumed that's a part of the scenario, and I feel like that's part of the problem," she said. There is a big difference, she said, between fearing that you'll "lose control" and hurt your child, or having intrusive thoughts of you dropping them, than of actually harming your child. "The intent is different there," Zweifel said. 

Postpartum psychosis is a very rare condition which can result in the afflicted person attempting to harm themselves or their baby. According to the Mayo Clinic, some of the signs of postpartum psychosis include confusion, paranoia, excessive energy and agitation, hallucinations and delusions. 

Read more: 13 Suicide and Crisis Intervention Hotlines to Call or Text When You Need Help

A woman holds a crying baby

Having a baby with colic, frequent and intense crying in a healthy infant, can increase the risk of postpartum depression in new parents, per the Mayo Clinic. 

damircudic/Getty

Postpartum depression causes

Many factors can contribute to depression after childbirth, including social factors like not having a support system, societal pressure to feel a certain way and the way a person's body reacts to hormonal changes.

Hormones

Estrogen and progesterone levels skyrocket during pregnancy and then very quickly after birth, they start to drop. This huge dip in hormones is what causes many people to experience strong emotions following birth. 

Research suggests that there's not different hormone levels or amounts in people who experience PPD compared to people who don't, Zweifel said. But there might be a difference in how their brain responds to changes in estrogen. Zweifel called the varying chemical effect of estrogen as a "prominent working theory," but it helps explain why oftentimes the people who experience severe mood changes in connection with their menstrual cycle may also be more likely to experience PPD or have more mood-related symptoms during menopause. 

"That subset is experiencing the same changes and same patterns," Zweifel said. "But the receptor sites in their brain, essentially, sort of respond differently. They're extra sensitive."

Outside factors

Zweifel said a lot of people experiencing symptoms of depression who come into her office feel better almost immediately after she dispels myths about what makes someone an inferior parent -- missing the "golden hour" of contact with a newborn for medical reasons, for example, or choosing to formula feed instead of breastfeed. Another record she has to set straight is the idea that all parents have an immediate bond with their infant, and if they don't, it means there's something wrong with them. 

"Bonding with an infant takes time, and our society does a terrible job of being honest with women about this," Zweifel said. She likes to instill the idea of a "fourth trimester," because there's still so much developing happening on the baby's end in the first few weeks of life that makes the parent-child relationship very straining on the parent, often leaving them "starved for validation" because the baby isn't able to acknowledge the parent, or even able to focus their eyes yet. 

In addition to unrealistic expectations of what it means to be a parent, Zweifel said other factors like being the only parent who gets up when the baby cries can exacerbate PPD, or having a child with acid reflux or other medical conditions that require extra care. 

Other risk factors, per the CDC, include being a parent to multiples (twins, triplets or more), being a teen parent, having a family or personal history of depression, having a preterm or complicated birth, experiencing difficulty getting pregnant and other stressful events surrounding pregnancy. 

A man holds up a baby

Noncarrying parents can also develop postpartum depression.

Getty Images

PPD is also not a limited experience to the person giving birth. Although the other parent won't be experiencing the hormonal changes that can cause symptoms of depression, similar lifestyle changes, added stress, lack of sleep and societal pressure remain. A 2014 study published in the journal Pediatrics found that depression among new dads increased an average of 68% the first year of their child's life.

If your mental health is a concern to you, reach out for help. If you're interested in seeking treatment with medicine, Zweifel recommends finding a psychiatrist or another professional who works specifically with people on postpartum mood dysregulation.

The information contained in this article is for educational and informational purposes only and is not intended as health or medical advice. Always consult a physician or other qualified health provider regarding any questions you may have about a medical condition or health objectives.


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Reserve a VinFast EV for $200, get $4,800 towards the final purchase price and an NFT


Reserve a VinFast EV for $200, get $4,800 towards the final purchase price and an NFT

This story is part of CES, where CNET covers the latest news on the most incredible tech coming soon.

VinFast , the latest startup automaker with roots planted in Vietnam, is nearly ready to sell cars in America. But, before production lines start humming, it's opening reservation books. On Monday, the startup announced reservations for its first two electric vehicles, the VF e35, a midsize SUV, and VF 36, a large SUV, on Jan. 5. The reservation process coincides with a CES 2022 presentation, which includes the company's blockchain technology that will find its way to numerous areas of the VinFast ordering and ownership ecosystem.

However, the real draw is the "deal," so to speak, that VinFast will advertise. US customers that place a reservation will need to pay a $200 refundable deposit. When it's time to actually place an order, the startup will provide a credit towards the final purchase price for up to $5,000. For the VF e36, it's the $5,000 figure, and for the VF e35, it's $3,000. Subtract the $200 and buyers are left with a $4,800 or $2,800 credit on VinFast.

The company will also give reservation holders an exclusive NFT as part of a blockchain wallet and membership to a club the company calls "Pioneer's Gratitude to Pioneers." Whatever that means. 

VinFast's efforts have been commendable thus far with major investments in production, engineering and testing facilities. The company operates a factory in Hai Phong and purchased General Motors' former Vietnamese factory in 2017. It also bought GM's Holden division's retired Lang Lang Proving Ground in Australia in 2020, though the site is once again for sale.

As for the two SUVs production schedule, assembly lines should fire up late this year.


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Apple's iPhone 13 is great, but these missing features are a letdown


Apple's iPhone 13 is great, but these missing features are a letdown

With longer battery life, better cameras, a new Cinematic mode and more base-level storage space, Apple's iPhone 13 lineup has a lot to offer over its predecessors. (Check out CNET's iPhone 13, 13 Mini, 13 Pro and Pro Max reviews.) Although there's a lot to love about the iPhone 13, it's missing a few features we had hoped to see from Apple's latest smartphone. Many of these features are available on Android competitors, while others can be found on different Apple devices. 

The iPhone 13, which is available for purchase, starts at $829 for the standard model without a carrier discount. The Mini begins at $729, the iPhone 13 Pro starts at $999 and the iPhone 13 Pro Max has an entry price of $1,099.

Read moreShould you upgrade to iPhone 13? We compared the last five years of iPhones to find out

From an in-screen fingerprint reader to a truly borderless screen, here are the features missing from the iPhone 13.

USB-C support

Wouldn't it be great if you could use the same charger for your iPhone and the other gadgets in your home? Apple's latest iPhone, however, is once again missing USB-C connectivity. As has been the case since 2012, the latest iPhones require Apple's proprietary Lightning cable for wired charging.

Not only does that mean you can't use chargers from other gadgets to power up your iPhone, but it also means chargers from other Apple mobile devices might not be compatible with your iPhone. Apple's iPad Air, iPad Pro and newly announced iPad Mini, for example, all charge via USB-C. That means even if you're an Apple loyalist, you'll need to keep track of multiple charging cables.

An in-screen fingerprint reader

Face ID works great most of the time, but it would be nice to have the option of using your fingerprint to unlock your device as well. That's especially true over the last year and a half since Face ID can't accurately identify you while wearing a face mask. If you don't have an Apple Watch, you've probably been typing in your passcode much more than usual over the past year.

Read more: New iPhone 13? How to transfer data from iPhone to iPhone

Many Android phones, such as those from Samsung, Motorola and OnePlus, have fingerprint readers built into their screens. A 2019 report from analyst Ming-Chi Kuo, who is known for his sometimes accurate Apple predictions, said Apple would release an iPhone with Face ID and an in-display fingerprint sensor in 2021. That didn't turn out to be true, but perhaps we'll see it in the iPhone 14

Satellite connectivity

One of the most prominent rumors about the iPhone 13 in the weeks before its launch was that it would come with satellite connectivity for sending texts in emergency scenarios. That didn't turn out to be true, at least not yet. 

Kuo and Bloomberg both reported that the iPhone 13 would be able to use satellite connectivity in areas without cellular coverage. But Bloomberg's report provided a bit more detail, saying that this feature would primarily serve as an SOS for contacting emergency services. Messages would have a length restriction, and you might have to walk to a certain location to connect. 

However, the Bloomberg report did say that the feature could be scrapped, and it warned that the iPhone 13 may not have the feature at launch even if it has the hardware to support it.

Wi-Fi 6E support

Wi-Fi 6E  is new and isn't a must-have yet. But since many people buy an iPhone with the intention of keeping it for several years, it would have been helpful to see Wi-Fi 6E support in at least the Pro and Pro Max models.

Wi-Fi 6E is a special designation for Wi-Fi 6 devices that allows them to access the new 6GHz band of spectrum. As my colleague Ry Crist puts it, think of the 6GHz band as a "shiny, new seven-lane superhighway" that's only available for select devices. The 2.4GHz and 5GHz bands we're used to connecting on today's routers are more like a "one-lane country highway" and a "three-lane interstate," respectively. 

There aren't many smartphones out there that support Wi-Fi 6E yet. But Samsung's Galaxy S21 Ultra is one of them, and we're already seeing routers from Asus and Netgear that support 6E. If you're paying for the top-of-the-line iPhone, it would be useful to at least have Wi-Fi 6E connectivity as an option.

An always-on display

My Apple Watch has an always-on display, and I only wish my iPhone could, too. For years, smartphones from Samsung, OnePlus and other Android device-makers have had screens that are capable of showing information onscreen even when the display is asleep. 

That might not sound like a big deal, but I've found it to be surprisingly useful. Most phones with an always-on display will show information like the time and your next calendar event when the display is turned off. 

Having this information available at a glance has made it easier to see when my next meeting is without having to actually pick up my phone, which is helpful for avoiding distractions. If you don't own a smartwatch, an always-on display makes it easier to quickly see small bits of information while maintaining some distance from your phone. 

A telephoto lens with a 10x optical zoom

The iPhone 13 lineup is getting major camera quality improvements. There's a new Cinematic mode on all four models that automatically switches the focus between subjects as needed, and the iPhone 13 Pro is getting the ability to take macro shots.

But the iPhone 13's telephoto camera still doesn't have as close a zoom as Samsung's Galaxy S21 Ultra. The iPhone 13 Pro and iPhone 13 Pro Max have 6x optical zoom range, while the Galaxy S21 Ultra has two telephoto lenses that support a 3x and 10x optical zoom. 

Samsung's smartphones are known for their zooming capabilities, which is why the Galaxy Note 20 Ultra was named our favorite phone for camera zoom in 2020. But we'll have to wait until we've tested the iPhone 13 Pro to see how it really stacks up against Samsung's latest flagships. 

A notchless screen

Yes, Apple fans are probably used to the notch by now since it's been present on iPhones since 2017. But it's hard to overlook it when you consider the progress Android device-makers have made in this regard.

Most Android smartphones come with notch-free screens that include just a subtle hole-shaped cutout for the camera. Samsung was among the earliest to embrace this design back in 2019 with the Galaxy S10 family. But now, this design is common across the Android landscape, whether you're looking at phones from Samsung, Google, OnePlus or Motorola.

However, it's worth pointing out that part of the reason why the iPhone's notch is so large is because that's where all of its Face ID sensors are located. Apple's facial recognition system has generally been considered to be ahead of the competition, especially around the time it launched. 

The flexibility to control the screen's refresh rate 

The iPhone 13 Pro and Pro Max are the first iPhones to get Apple's ProMotion feature, which boosts the display's refresh rate to up to 120Hz for smoother scrolling and increased responsiveness. To conserve battery life, it throttles the screen to a lower refresh rate to maintain battery life.

Other phones like the Galaxy S21 and Galaxy S20 give you more control and flexibility by allowing you to choose when you want to crank the refresh rate up to 120Hz rather than having the phone decide for you. It's possible to choose between a smoother scrolling option and a battery life option in Samsung's settings menu. You'll have to be willing to sacrifice some image quality and battery life, however.

Faster wireless charging

Wireless charging has been standard on the iPhone since 2017, but we still have yet to see meaningful improvements when it comes to charging speeds. If you're not using a MagSafe wireless charger, which can deliver 15-watt wireless charging speeds, you'll only be able to charge your iPhone at 7.5 watts. 

That's a lot slower than most Android phones. Samsung's Galaxy S21, for example, supports 10-watt wireless charging, while the Galaxy S20 FE supports faster 15-watt wireless charging. The OnePlus 9 Pro supports 50-watt wireless charging.

Now that wireless charging is a given and is no longer considered a rarity on smartphones, it would be nice to see Apple boost the iPhone's wireless charging speeds the way it has done for the Apple Watch.

Reverse wireless charging for powering other gadgets 

We've all been there. Maybe you're on the bus or train, and you pull out your AirPods only to see that dreaded red light signaling that your battery is about to run out. If only you could rest your AirPods case on the back of your iPhone to give it a little power boost.

This feature, broadly known as reverse wireless charging, is available on Android phones such as Samsung's Galaxy S21 line and the Google Pixel 5, but not on the iPhone 13. It essentially enables the back of your phone to act as a wireless charging pad for accessories like smartphones, wireless earbuds and even other phones.

Apple does have some version of this feature, but it's very limited and can't be used to power up AirPods or the Apple Watch, as far as we know. The iPhone 13 and iPhone 12 can supply a charge to Apple's MagSafe Battery Pack when plugged in with the accessory attached. We'd love to see Apple expand this functionality in the future.

Apple Pencil support

Apple has brought Apple Pencil support to every iPad in its lineup, but there's still no compatibility with the iPhone. I could particularly see the Apple Pencil being useful on the iPhone 13 Pro Max and the iPhone 12 Pro Max, both of which have nearly tablet-size 6.7-inch screens that are ideal for sketching and note taking. Plus, adding Apple Pencil support to the supersize Pro Max phones would give Apple yet another way to differentiate the Pro Max from the 6.1-inch Pro and make more use of its larger screen.

Lossless audio over Bluetooth

With chipmaker Qualcomm debuting its proprietary audio format for delivering lossless audio over Bluetooth, it would have been nice to hear similar ambitions from Apple. 

Lossless audio uses a different compression method that preserves more detail than the process that's used to make Bluetooth audio files small enough to store on your phone. Qualcomm expects devices that support its lossless audio format should be launching in early 2022, so there's a chance we'll hear more about it around CES in January.

In the meantime, you'll have to use wired headphones or your iPhone's built-in speakers to listen to lossless music from your mobile device. 

Center Stage for video calls

The entry-level iPad and iPad Mini now have Center Stage, the feature that automatically keeps your face in frame when video chatting. It works automatically and has been super convenient now that many of us are communicating with friends, co-workers and family members over video calls. 

It would be more useful, however, if Center Stage was available across all of Apple's products, including iPhones and Macs. In fact, I do most of my video chatting on an iPhone or a Mac rather than an iPad, especially since phones are smaller and usually easier to hold at eye level in portrait orientation.


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Dalgona coffee recipe: How to make the whipped coffee the internet loves


Dalgona coffee recipe: How to make the whipped coffee the internet loves

More than a year after it became wildly popular online, dalgona coffee is still beloved all over the internet. This cold whipped coffee drink is an Instagram, YouTube and TikTok sensation and was inspired by a South Korean honeycomb toffee of the same name. It's sweet, smooth and will make you forget all about running out to grab a latte.

The basic recipe includes a mere five ingredients -- instant coffee, sugar, water, milk and ice -- and is easy to prepare at home by yourself or with your kids. The beauty of this beverage is that it's open to dozens of variations. Decaf versions won't keep you up all night. Oat milk and coconut sugar work just as well as the standard dairy and sweetener. Lemon zest and mint can jazz up the milk. You can even add a shot of booze and extra caffeine. 

There are just a few things we wouldn't recommend. Cocoa powder doesn't sub in well for instant coffee. If you place the dalgona foam on a hot drink, it'll melt. And we don't recommend our colleague's version topped with bologna. 

For more coffee drinks, here's how to make yourself a cup of drip coffee or the best iced coffee ever . If you're feeling especially ambitious, here's how to make your favorite Starbucks coffee drinks  at home. 

Read more: Best coffee maker to buy in 2021

For the basic dalgona coffee recipe, all you'll need is:

  • 1 tablespoon of instant coffee or instant espresso
  • 1 tablespoon of granulated sugar
  • 1 tablespoon of water
  • milk (dairy or nondairy will work equally well here)

Add the instant coffee, sugar and water to a bowl and whisk vigorously (or use a hand blender if you have one to make it a much easier process) until the mixture becomes superthick -- it should hold a similar consistency to whipped cream with somewhat stiff peaks -- and turns a subtle golden-brown color. 

Read more:  The best coffee accessories of 2021

Pour milk into a glass filled with ice cubes, then scoop the pillowy mixture on top of the cold milk or mix the two parts together if you're looking for more of a latte situation.

You can also dress it up with variations, like mint in the milk layer, or dalgona coffee foam over a different beverage -- like iced coffee or cold chocolate milk -- or even sprinkles on top. It's a fun, lighthearted drink, so have fun with it.

Snap a photo (or video the entire thing) and post it online so that you, too, can join the ever-growing dalgona coffee community. 

Read moreThese coffee makers keep the cold brew flowing at home

A version of this story was previously posted on Chowhound .


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The most accurate calorie burn tracker isn't a smartwatch -- and you can make one yourself


The most accurate calorie burn tracker isn't a smartwatch -- and you can make one yourself

Smartwatches are great tools for keeping track of your activity. They can monitor your heart rate during a workout and track your sleep, and some even help manage workout recovery. But severalstudies show smartwatches and fitness trackers don't do as good of a job at calculating calorie burn during activity and can be off anywhere between 40% to 80% of your actual energy expenditure. 

A new wearable developed at Stanford University claims to be far more accurate. It's not worn on the wrist -- you put it on your leg.

That's because it measures leg motion, where most of your energy is used during lower body exercises like walking, running, climbing stairs and cycling. It uses two inertial measurement units (IMUs) plus a battery unit and microcontroller worn on the hip. Definitely not as convenient as strapping on a wrist-based smartwatch or tracker, but it's the first proof of concept developed by Stanford University graduate student Patrick Slade. 

Measuring calorie burn accurately is important for a number of reasons, but mainly because it can help people manage their weight. "We want to understand the connection between physical activity and obesity so we can develop new interventions to help people live longer, healthier and more fulfilling lives," says Steve Collins, associate professor of mechanical engineering at Stanford University, who co-authored the findings with Slade.

Naturally, I wanted to put this system to the test to see if a tracker worn on my leg could really be more accurate at estimating calories burned than one on my wrist.

stanfordwearable

Stanford graduate student Delaney Miller wearing the leg tracker.

Andrew Brodhead

Measuring calorie burn is complex

Most consumer wearables use heart rate and wrist-based motion to calculate calorie burn during activity. But heart rate isn't directly related to the energy you are expending, says Slade. "Your heart is just pumping blood through your body and has a bunch of different factors that affect it," he says. "How tired you are, if you had coffee, worked out, this time history makes it really volatile."

legwearable

Despite the wires, the tracker didn't get in the way during my workouts and is lightweight.

Lexy Savvides/CNET

Instead, his system breaks down motion into each step, then uses a machine-learning model to calculate energy expenditure. It was tested with over a dozen participants of varying ages and weights and averaged 13% error, compared with 40% to 80% error from consumer wearables.

To test its accuracy for myself, I've come to Stanford University's human performance lab, filled to the brim with a range of sophisticated workout equipment including an antigravity treadmill. But for the purposes of testing out this new wearable, only regular gym machines like a stair climber and exercise bike are needed. I'll be doing four workouts for 5 minutes each: walking, running, cycling and stair stepping.

Putting on Slade's system is straightforward. You strap two stretchy bands with the IMUs on your thigh and shin, then wrap a controller and battery around your waist. It feels like I have a small smartphone strapped to my midsection and I don't even notice the wires running down my legs. 

I also put on a lab-grade respirometer to measure my actual energy expenditure. This monitors the carbon dioxide I breathe out and the oxygen I breathe in to give me what Slade calls the "ground truth" reading, or my actual calorie burn. It costs tens of thousands of dollars and weighs about 5 pounds complete with mask and backpack, so it's not really the best tool for people to use outside the lab.

Finally, I strap a smartwatch to my wrist to get its calorie estimations. After my workouts, we'll compare results from all three devices. 

Once we get a baseline reading from the respirometer, I start working out. I know I'm not going to be setting any pace records with all these tools strapped to my body, but fortunately that doesn't matter -- we're only tracking energy expenditure.

The results are in -- and they're surprising

After gathering all the data points from each device, Slade walks me through the results. For running, the respirometry device said I burned 87 calories, the leg wearable 66 calories and the smartwatch 52 calories. You can see the rest of the calorie counts per exercise in the video on this page, but across all four workouts, the leg wearable error rate was 14% compared with 58% from the watch on my wrist. Turns out the watch was underestimating my overall calorie burn during each exercise, but Slade tells me it could overestimate for someone else. "People can't necessarily just scale the smartwatch estimates by a fixed amount to make them accurate for everyone," he says.

For now, this leg-based system only works for lower-body exercises, but he's already thinking of ways to make a version that can also take into account upper-body movement like weightlifting. "Maybe using an IMU in your smartwatch to get that arm motion, if you're doing a rep you could perhaps use the same modeling approach," he says. The research paper also encourages smartwatch engineers to use its method to improve calorie tracking effectiveness.

You can't buy this new wearable, but you can make it yourself. All of the instructions and code were made available in the hopes this will help speed up development. Slade is also working on a smaller and lighter version that could be integrated into clothing and maybe even use a smartphone as the controller.

For these sorts of trackers viable, they'll need to be affordable and small enough to wear all day, so we can track our energy expenditure on a second-by-second basis. "So you can really understand which activities led to the energy expenditure and how intense it was," Collins tells me. The end goal? By tracking our activity more accurately, wearables will be able to give us personalized insights into how to exercise or manage our weight.


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The new Acura Integra will be a hatchback


The new Acura Integra will be a hatchback

Acura sent our hearts aflutter at Monterey Car Week in August when it announced the return of a storied nameplate: Integra. The new compact sedan is expected to arrive in 2022, and on Tuesday, Acura released another teaser image of the upcoming Integra, confirming its rakish hatchback design.

"Just like the original Integra, which helped launch the Acura brand in 1986, the fifth-generation Integra will be a premium sport compact with striking five-door design," the Honda-owned automaker said in a statement.

We really like what we see here: a sloping roofline terminating in a short deck with a small lip spoiler. The taillights have nice LED detailing and the design mimics that of the headlights, which we first saw in Acura's original Integra teaser.

Acura has yet to confirm any more details, but the five-door configuration leads us to believe the new Integra will share its underpinnings with the 2022 Honda Civic Hatchback. We're keeping our fingers crossed for a turbocharged engine and a manual transmission, and we're really hoping for some kind of hotter Integra Type S, possibly with next-gen Civic Type R guts.

Look for the new Acura Integra to debut next spring.


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Coca-Cola Byte Is Now Available. Here's Where to Buy Coke's New Pixel Drink


Coca-Cola Byte Is Now Available. Here's Where to Buy Coke's New Pixel Drink

Coca-Cola's brand-new flavor is now available, and it tastes nothing like the Starlight "space" flavored Coke that was released in February. It's called Coca-Cola Zero Sugar Byte and according to the soda giant, it tastes like pixels. I decided to give it a try, because who doesn't want to taste pixels? 

The company says it's the first Coca-Cola flavor born in the metaverse and that it's been hidden in plain sight. "An early look at the beverage appeared in a new island created in Fortnite," Coca-Cola said.

"What I find especially exciting about this Coke Creation is the intentional air of mystery in defining the taste of a pixel," Oana Vlad, Coca-Cola's senior director of strategy, told me. "We know that any new Coca-Cola Creations expression will provoke debate and curiosity, which we welcome."

Coca-Cola said it'll release more limited-edition beverages later this year, but the company expects Byte to be the drop of the season. Here's what you need to know about the new Coke Byte.

Here's how my Coke Byte taste test went

I received a tall, slender can of Coca-Cola's new Byte Coke and upon opening it, it had quite a loud fizz -- much more carbonation than the Starlight Coke. This one has a brown hue like a regular Coke Zero (I expected it to be purple), with a very sweet smell. When I took a sip of the Coke Byte, the fizziness was so strong that it reminded me of when I would eat Pop Rocks as a kid. Maybe that's what pixels taste like? The flavor was soft but still tasted like a Coke Zero. I could taste the sweetener used to replace the sugar... possibly Splenda? 

See my experience with the Coca-Cola Starlight "space" flavored drink, which I thought tasted like a ginger soda. If I had to choose between the two, Coca-Cola Zero Sugar Byte would be my choice, since the flavor is more normal.

Can I buy the Coca-Cola Byte now?

Yes. Coke's new Byte drink went on sale May 2 and you can now buy a two-pack for $14.77, with a max of three boxes per customer. Note that you may have to wait in line to grab yours.

Where can I buy Coke Byte?

Though Starlight was available in stores, Coca-Cola Byte is only available for purchase on Coke's website, at the link above. The company says it'll be available in "super limited quantity" on a first-come, first-served basis.

How long will the pixel-flavored Coke be around?

Coca-Cola Zero Sugar Byte will be available in extremely limited quantities, and the portal for purchase will be open only for a limited period of time while supplies last. 

coca-cola byte can with limited edition branding

Coca-Cola Byte will come in packs of two.

Coca-Cola

Why did Coca-Cola come out with a pixel-flavored drink?

Coca-Cola says it was inspired by the creativity of the global gaming community and decided to create Coca-Cola Zero Sugar Byte to bring the flavor of pixels to life.

"This new Coca-Cola Creations flavor is an amazing nod to gamers from one of the most iconic brands in existence," Lachlan Power, a professional gamer and founder of esports team PWR, said in the press release.

What's on Coke Byte's Fortnite island?

The Fortnite Pixel Point island is an area in the game where you can interact with other players. It has four multiplayer minigames: The Castle, The Escape, The Race and The Tower.

What is the Coca-Cola AR game?

In addition to the Fortnite Pixel Point island, Coca-Cola is launching an augmented reality experience. You'll be able to access it by scanning a Byte Coke on the Coca-Cola Creations website.

Here's how Coca-Cola describes it: "The game tells the story of BYTE, an 8-bit pixel who was left behind when Coca-Cola Byte entered the metaverse. Using fingers to hold down arrows, players will guide BYTE to 'jump' up a spiral staircase so the lone pixel can rejoin the Coca-Cola logo. Players' finish times will be recorded in a virtual leaderboard that can be shared on social media."

For more on soda, check out this limited-edition Pepsi Maple Syrup Cola. And here's more about the metaverse.


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