Accurate Calorie Counter

Almost all of our workouts are based on approximation. For example a 125-lb person burns approx. 360 calories per hour if they do a vigorous dumbbell workout session. To remove the veil of doubt and talk about hard facts and figures, we have here the C-Ring Dumbbells. The weights sync with your smartphone or PC via USB and tell you exactly how many calories you burnt during your session. Color-coded lighting system displays how intense your workout is and if you need to step it up by a notch.

The best part is that you can increase the intensity by attaching more of the magnetic weight-discs to the dumbbell. The perfect marriage of brain and brawn!

Designer: Wang Zihao


  • Quintin says:

    If you’d want to attach a substantial amount of weight via a magnet (and stack them, like in the rendering), you’d have to use quite strong magnets (they’d have to carry their own and their ‘neighbours’ weight and not fly of when doing exercises..).

    It would be difficult to get your weights off the dumbbell again…

  • Rawwhale says:

    How does syncing to a computer make calorie counting more accurate?

    The only way to directly track calories is through “calorimetry” or the measurement of heat (calories are a unit of heat) produced during exercise (or indirectly through the oxygen/carbon dioxide exchange rates during breathing).

    This design doesn’t solve the problem at all, it’s just cheap plastic weights using the same approximation formula and constantly wasting precious energy.

  • Jimmy C says:

    @Quintin: Maybe a way to reverse the polarity when you’re finished?
    @Rawwhale: I don’t see you solving the problem.

  • Rawwhale says:

    Ok…. I thought introducing calorimetry to a designer trying to accurately count calories was helpful… what exactly did you have in mind? This is supposed to be room for an open constructive critique, lets try to help the designers instead of trying to put down other commenters.

  • Christopher says:

    Bluetooth would be a better way to interface, and in this way you can have real-time information sent to the smart phone so you can monitor your progress. the USB does however have the benefit of not needing a power source, but means the weights need to be tethered to you phone with a cable, which is not really convenient during workout.

    Like the idea though 🙂

  • Probably the most unrealistic section you find on yanko but by far my favourite! Concept towns

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