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Compact home gym uses machine learning to help you work out smarter

Tonal is a home gym that mounts on the wall and comes with a built-in 24-inch screen and machine learning capabilities that allow it to automatically track a user's progress and increase the difficult of a workout to match that growth.

In an age when fitness apps are a dime a dozen and our smartwatches track our every move, the humble home gym seems to have become a relic of the past. A company called Tonal is looking to change that with a new smart home exercise machine that promises to take our workouts to the next level by using machining learning techniques to help us get stronger and fitter.

At the heart of the Tonal workout system is a wall-mounted exercise machine that looks like it has been designed to blend seamlessly into the environment when not in use. The high-tech device features a 24-inch screen that not only serves as an interface for interacting with the machine, but can also serve up a streaming library of expert-led workouts on demand. Users can select the type of workout they want to do or the muscle group they want to target and the system will provide a video that corresponds to that request. This allows Tonal to play the role of a personal trainer, offering up advice on how to properly approach the fitness routine.

At its core, Tonal is a digital weight machine that has found a way to replace the clunky barbell and metal plates. Instead, the device uses a specially designed electromagnetic engine that can replicate the resistance of weights through the use of a pair of adjustable arms that fold out from the side of the unit. This gives the user the ability to get a whole body workout from a device that is about the size of a flat-panel television, as opposed to having a whole room dedicated to weightlifting equipment.

What really sets Tonal apart from other exercise machines is its ability to monitor a user’s progress and automatically adjust workouts as strength and conditioning improves. The first time someone uses the system, it conducts an assessment of their current fitness level and creates a personal program designed to improve performance. As that person become stronger, the system will  automatically update the intensity of the workout to reflect the changes. In this way, users should continue to see steady gains in their fitness and strength, helping them to avoid hitting plateaus along the way.

As with some of the other smart fitness machines that have hit the market recently – like the Peloton bike and NordicTrack’s RW900 rowing machine –the Tonal system will set you back a few dollars. The system is priced at $2,995, with the option to add $495 in “smart accessories.” That’s a lot of money, but if the device delivers on its promise, it will be like having a whole gym available in your home at any time.

The domain of wearable devices has grown by leaps and bounds, not just in terms of mass adoption, but also owing to some astounding innovations. Wearable heart rate sensors can now measure everything from heart rate and blood oxygen levels to ECG in form factors ranging from a watch to finger rings.

These sensors, however, come with an inherent set of problems. Motion artifacts arising from movement or vigorous activity alter the blood flow and affect their accuracy. Optical heart rate sensors (photoplethysmography or PPG tech) also struggle with darker skin tones, tattoos, or even body placement. 

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On today’s special edition of You Asked, we tracked down each of our editors and put them on the spot to find out what they thought was the most impressive thing they saw at CES 2025 in Early January. Let’s find out what they had to say.
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There’s been some really cool TV tech at CES, but the thing I’m most excited about is the new Panasonic Z95B. Instead of the regular OLED display structure we’ve seen in recent years with MLA technology, this uses a four-layer panel structure. It features individual red, green, and blue layers (two of the latter) for the emissive light.