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Your watch isn’t as accurate at tracking calories as you think

A new wearable designed at Stanford University claims to be far more accurate at calculating calorie burn than the smartwatch on your wrist. It measures leg motion and works for lower-body exercises including walking, running, cycling and climbing stairs. We compare it to a lab-grade calorie-tracking tool. Read more on CNET: How you can build…

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A new wearable designed at Stanford University claims to be far more accurate at calculating calorie burn than the smartwatch on your wrist. It measures leg motion and works for lower-body exercises including walking, running, cycling and climbing stairs. We compare it to a lab-grade calorie-tracking tool.

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0:00 Intro
0:59 Why aren’t smartwatches good at calorie tracking?
2:27 Designing a new wearable for the leg
3:35 Walking, running, cycling, stair tests
5:13 Results
7:00 Upper body workouts

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43 Comments

43 Comments

  1. ltlbuddha

    February 1, 2022 at 3:44 pm

    Something they didn’t mention, but is important, is consistency. For weight management, a scale doesn’t need to be accurate, but it does need to be consistent. This is definitely also a factor in measuring calories. If the wearables are consistent in their readings, they still provide useful data.

  2. Rev Ell

    February 1, 2022 at 3:53 pm

    Obviously…

  3. SS

    February 1, 2022 at 4:04 pm

    Tracking calories is not important to me. Distance and time tracking matters more to me.

  4. Dmon !

    February 1, 2022 at 4:14 pm

    My fitbit charge 5 was claiming I was burning like 5000 calories. I switched over to apple watch and now it’s like 600. Cant trust anything but I’m hoping i can make use of the number in some way. For example if this can be considered close enough to my calories burned without BMR. Since I track my weight too and know how many calories burned in a kilo weight loss I’m hoping consistent calorie burn count can let me figure something out, like a scaling factor to work out total daily burn

  5. Mr Egusi

    February 1, 2022 at 4:14 pm

    This is why you should not track your calories.
    Tracking active minutes is a more reliable metric.

  6. Zachary Cook

    February 1, 2022 at 4:15 pm

    I thought everybody already knew this because you have to agree to the disclaimer that it may not represent accurate health data and that you should seek your physician for proper information. Watches are only meant to be a guide to give you an average, which is clear to me because I’m a pretty thin guy and after a bike ride it says I only burn about 30 to 40 cal which is inaccurate, because I know with my body type I’m burning way more.

  7. ALB TR 92

    February 1, 2022 at 4:25 pm

    You dont say

  8. Tazboy

    February 1, 2022 at 4:37 pm

    All that equipment make her look like she came from Chernobyl

  9. nim ace

    February 1, 2022 at 4:41 pm

    Well it’s not about correct or not smartwatches are just normal everyday standard meter of calories as we compare it from yesterday or 1 month ago data or with someone with same watch and compare if calories burn increased or decreased or have i walked more today than yesterday not that i want accurate data

  10. ebin belji

    February 1, 2022 at 5:03 pm

    Who other than the brands and ambassadors said that its accurate

  11. John Jensen

    February 1, 2022 at 5:05 pm

    Good running technique that does not harm the body. Nice to see. You get rid of less energy if you lift your legs more, but if you are looking to burn calories, the style is perfect.

  12. JUR O

    February 1, 2022 at 5:21 pm

    I didn’t think that

  13. video watcher

    February 1, 2022 at 5:29 pm

    A few issues. 1. Wearables wont ever even be close to accurate on fitness equipment as you arent actually physically moving. 2. I would never wear such bulky equipment 3. Its worthwhile testing a smart watch in combination with a compatible chest strap heart monitor.

  14. James Kappel

    February 1, 2022 at 5:37 pm

    All right, very interesting. Wonderful presentation. Thank you.

  15. James Kappel

    February 1, 2022 at 5:40 pm

    ???????? Take a minuet. Ya, Lexy

  16. Leif S

    February 1, 2022 at 6:10 pm

    Jeeeez Louise! There merely obvious is enough…

  17. NextNate03

    February 1, 2022 at 6:39 pm

    Smart Clothes is at least 5-10 years away. Double or triple that where it becomes cheap enough for it to be standard of everything.

    Clothes need to last for 2 to 5+ years.

    Electronics and water don’t mix.

    If it really becomes standard on clothes, E-Waste is going to become a lot worse.

  18. Edgardo Munoz

    February 1, 2022 at 10:16 pm

    doesn’t matter as long as you stay consistent with your goal, use whatever number as a baseline and adjust as needed. Eat more to gain weight eat less to lose weight. Of course its more complicated than that but in general thats how you do it

  19. raboox9

    February 1, 2022 at 10:57 pm

    I am… your fitness tracker.

  20. Clay Chapman

    February 1, 2022 at 11:11 pm

    Reporting error rate for smart watches, when 1 smart watch brand was tested on 1 person is a bit of a stretch, especially considering each company uses a different combination of HR sensor and software…

  21. ElectSaul

    February 1, 2022 at 11:12 pm

    So if my Apple Watch series SE says that I burn 300 calories I’m actually burning more?

  22. Pat Lu

    February 1, 2022 at 11:29 pm

    Duh, any consumer gears are a joke when you compare them to their sophisticated professional counterparts. Trying so hard to make headline

  23. wrighty338

    February 2, 2022 at 12:15 am

    1 person, 1 watch?

  24. Walter Solt

    February 2, 2022 at 1:27 am

    I never rely on it from my watch but it’s not the worst thing in the world to look at

  25. Un Deadly

    February 2, 2022 at 1:55 am

    my garmin keeps it good enough for me to have lost 60 pounds based on a daily caloric intake/defecit. i’m good. also, if your actual calorie burn from the leg device is higher than your watch, wouldn’t that be counterproductive to weight loss? if you think you have less calories than you actually do, and your weight loss method is caloric, then you will intake less calories going by the watch right?

  26. Free Speech

    February 2, 2022 at 3:28 am

    That’s why I don’t buy those kids toys.

  27. DeymSun

    February 2, 2022 at 3:42 am

    i love lexy

  28. Alvee One

    February 2, 2022 at 6:00 am

    I think it’s HILARIOUS that people think you can get an accurate calorie burn from something strapped to your wrist! ???? It’s also funny how people think something that is literally on your wrist can count the literal number of steps you take! The only thing any kind of smart watch is good for is tracking the time and distance using GPS. Everything else is guessing.

  29. Apurva G

    February 2, 2022 at 6:36 am

    Well if I’m actually burning more calories than my watch is telling me, I’ll take that as a win because it’s way better than the vice-versa.

  30. Arnav Nair

    February 2, 2022 at 8:16 am

    My smartwatch is now up for sale. Accepting bids now????????????

  31. Ares Varvaro

    February 2, 2022 at 9:37 am

    Jesus christ, i wouldn’t walk around wearing that harness if i were you. Some self-proclaimed vigilante might accidentally jump to the wrong conclusion and make democracy rain all over you.

  32. Darren Landford

    February 2, 2022 at 10:05 am

    My wife has a fitbit and I have a garmin. We train together, eat the same things and we’re only a year apart in age. My garmin gives me way higher calories burned then her fitbit. We never take calories seriously because it’s all in the math of the company’s algorithms and they’re idea of measurement. It is a good tool to keep motivated though.

  33. everything_huawei_pro

    February 2, 2022 at 10:12 am

    HUAWEI are 100% yesss, HUAWEI have worlds best technology 🙂 .

  34. dannydaw59

    February 2, 2022 at 10:44 am

    Did that breath measurement mask restrict breathing compared to not wearing a mask? That might affect calorie burn.

  35. Roy J

    February 2, 2022 at 11:14 am

    All that equipment looks way more convenient and comfortable than wearing a watch……
    Unless you’re a professional athlete or training for the Iron Man competition I’m sure a watch is fine for tracking workouts as long as it’s consistent

  36. B W

    February 2, 2022 at 6:22 pm

    Even a broken watch is right twice daily.

  37. Johnny Nimble

    February 2, 2022 at 6:46 pm

    No kidding. I heard the sky is blue too.

  38. Berr Ruh

    February 2, 2022 at 8:50 pm

    I figured out how inaccurate these new smart watches were tracking calories. I lo key miss my old fit bit

  39. Yo RAHeem

    February 3, 2022 at 6:34 pm

    ????Lexy

  40. Dyvel

    February 3, 2022 at 7:16 pm

    Did anybody actually believe that to be even close in terms of accuracy?

  41. Dave Aultman

    February 3, 2022 at 7:38 pm

    At least my watch doesn’t make me look like I’m a cyborg, or worse, a Batman wannabe. LOL. Get back to me when this stuff is inexpensive, waterproof, and fashionable. Buh-bye.

  42. Tony Stark

    February 3, 2022 at 9:55 pm

    Of course it’s not accurate
    Why would anyone think it is

  43. callmemarc

    February 3, 2022 at 11:40 pm

    What proof is there that his device is more accurate? This was just 3 sets of numbers from different devices, any of which could have been the closest to accurate.

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