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Samsung’s Galaxy Watch 4 calculates body fat from the wrist – The Verge

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Samsung’s new Galaxy Watch 4 has a feature that can calculate body fat percentage and muscle mass, the company announced yesterday. It’s the latest tech company to offer a body composition feature, joining Amazon, which has a body fat percentage feature in its Halo Band.

Body fat is generally a better way to assess health than weight, but it’s often calculated using a metric called the body mass index (BMI), which is crude and inaccurate. If wearables prove accurate, they could give people a better resource to monitor their health, Diana Thomas, a mathematician who studies body weight regulation at West Point, told The Verge in June.

The Galaxy measures body composition using a technique called bioelectrical impedance analysis (BIA), which sends a weak electric current through the body. It’s calculating the amount of water in the body — the signal moves more quickly through tissue that has higher percentages of water. Since fat has a higher water content than muscle, the technique can estimate how much fat is present in a person’s body.

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BIA can give an estimate of body fat, but it has limitations, said Thomas in an email to The Verge. There isn’t a perfect one-to-one ratio between the amount of water in the body and body fat, and the amount of water in the body changes over time, she said. It can go up and down with exercise, for example, or if someone is drinking a lot of water. One study found that BIA overestimated body fat if the measurement was taken right after someone drank around two cups of water.

Most available devices that use BIA to track body composition send the current through the soles of the feet (like a smart scale) or through the palms. Samsung shrunk the sensors down to fit on the back of the watch. The company’s Healthcare Sensor Lab published a study in January 2021 describing the technology. In the study, 203 people had their body composition analyzed by the watch, two other BIA devices, and a device that uses dual-energy X-ray absorptiometry (DXA) — an X-ray technique that shows fat distribution through the body, which is considered the gold standard for body composition measurement.

The smartwatch was accurate compared with the DXA measurement, the analysis found. Its calculations were also slightly closer to the DXA measurement than one of the two other BIA devices. Overall, the watch appears to work as well as a smart scale based on this study, Thomas said. She still wouldn’t use it in research studies based on the information available so far — the potential error rate as calculated in the study is too large for that. “For a personal touch point, it may be okay,” she said in the email to The Verge.

Samsung’s approach is different from the body composition analysis feature in Amazon’s Halo. First, the Halo only calculates body fat — not muscle. Its app directs users to take photos of their body, which it combines into a 3D image used to calculate body fat percentage. The system also gets an accurate measure of body fat compared with the DXA, according to an Amazon-funded study.

At the very least, both apps appear to work better than BMI at calculating body fat percentage. BMI is frequently used to guide medical decision-making, even though it’s often misleading — which can skew the diagnosis of some conditions and perpetuate weight-based stigma in healthcare. It’s used, though, because it’s cheap and easy. Most people don’t have access to the more accurate, expensive machines.

It’ll take more research to figure out how reliable the wearables can be in a real-world setting. But they’re easy to use and relatively cheap. If they work well enough to flag trends in people’s body composition that could affect their health, they could make these health metrics more accessible.

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‘Overwatch 2’ Ramattra Gameplay Trailer Shows The Transforming Tank In Action – Forbes

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Season 2 of Overwatch 2 is just 10 days away. It’ll add another hero to the fold in the form of Ramattra, an omnic tank. To kick off a week of Season 2 hype, Blizzard has provided the first official look at Ramattra in action with a gameplay trailer.

We already knew that Ramattra would able to transform between two forms, and we get some sense of that in the trailer. He has a barrier he can project, in a similar vein to Sigma (though it’ll likely work in a different way).

One of his abilities seems to be a gravity well that can pull airborne enemies to the ground. Used properly, it could be an effective way to make a Pharah, Echo, Wrecking Ball, Mercy or perhaps even a wall-riding Lúcio an easier target to take out.

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In his larger form, Ramattra can mitigate damage from the front by crossing his arms (similar to Doomfist’s Power Block). It looks like his attacks are more melee-based in that form too. As for Ramattra’s Ultimate, it seems like he deals area-of-effect damage while being able to use his other abilities.

We’ll find out more details about Ramattra and his kit in a developer update video that will premiere tomorrow. Next week, we’ll get the first gameplay trailer for Season 2, the content roadmap for the season and a reveal of the new map. There’s a lot to look forward to.

For more news and updates on Overwatch 2 and other games, follow my Forbes blog! You’ll get a weekly round-up email that includes everything I publish. You’d be doing me a solid, too — it’s a great way to support me and my work at no cost.

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Fido, Virgin add $45/50GB plan for Black Friday

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Fido and Virgin Plus have joined Koodo in offering a $45/mo 50GB Black Friday plan.

Like Koodo, both Fido and Virgin offer a $65/mo plan with 50GB of data plus a $20/mo bill credit for 24 months. That means customers pay $45/mo for two years with the plan.

The plans are only available for new activations and hardware upgrades, which means if you’re with one of these providers, you’ll need to swap to another one.

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You can check out the Fido offer here and the Virgin offer here.

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Hilarious Video Shows Psyduck Startling A Pokemon Scarlet and Violet Player While Taking A Photograph

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One Pokemon Scarlet and Violet fan has shared a funny video that shows a Psyduck appearing out of nowhere to startle a player who was snapping a photo. Pokemon Scarlet and Violet are among the best selling titles of the year, despite the mixed reviews from fans and critics globally. The gameplay and multiplayer mode of the latest Pokemon games receive praise and backlash for the myriad performance issues.


Because of these technical problems, Pokemon Scarlet and Violet are getting review bombed, but some fans are embracing them. Glitches are common in the latest titles, and players have reported seeing some truly bizarre things in their playthroughs. Some gamers have seen a grotesque glitch in Pokemon Scarlet and Violet, whereas a random Psyduck bug is also common. Psyduck makes the headlines again after a player spotted it in rather unusual circumstances.

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Reddit user metronn uploaded a video that shows their funny encounter with the duck Pokemon. The user intended to photograph a scenic view of Pokemon Scarlet and Violet‘s region of Paldea. Paldea is a brand-new area introduced in Pokemon Scarlet and Violet, which is based on the Iberian peninsula and has diverse geographic features like mountains, forests, and several lakes. In the video, the player attempts to take a picture of a serene place on the shoreside of a water body, with mountains in the background and water flowing peacefully.

After successfully capturing one side of the scenery, the player slowly moves the camera to show the surrounding areas and a few fish pocket monsters in the body of water. As the camera moves, something unusual is seen in the bottom right corner of the screen, which appears to be another Pokemon. This turns out to be a Psyduck, who appears out of nowhere and is standing right next to the user, who was seemingly unaware of its presence. The original poster is understandably startled by seeing the Psyduck, who apparently photobombed their efforts to take a beautiful picture in Pokemon Scarlet and Violet.

Since its introduction in the first generation, Psyduck has established itself as one of the most famous Pokemon of all time. It has featured in almost every Pokemon game from each generation until the current ninth-gen games, Pokemon Scarlet and Violet. Psyduck is not the strongest or the fastest pocket monster, but still, it has millions of fans around the world who are excited to see it in unusual circumstances.

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