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Learn more about the fact that smart scales are not so smart.

  • Rather than measuring the resistance of a (weak) electrical signal that passes through the body, our AI measures the users water fluctuation to reveal to users their true weight loss trend. 

  • The scale does not reveal body fat, scientific studies have warned users to be wary of BIA (bioelectrical impedance analysis, or bioimpedance) body fat outputs because studies show that not only are BIAs inaccurate, they are inconsistently inaccurate (8).

    • BIA has shown to have a margin of error as high as 8-9% (9,10)

  • Changes in hydration also sway BIA results. BIA seems to interpret a change in body water as a change in fat mass (11)

    • If you are dehydrated, a BIA device will assume that you’ve lost fat. If you are well hydrated, the BIA device will assume you have gained fat.


  • Benton, David, et al. "Minor degree of hypohydration adversely influences cognition: a mediator analysis." The American journal of clinical nutrition 104.3 (2016): 603-612

  • Jones, Leon C., et al. "Active dehydration impairs upper and lower body anaerobic muscular power." The Journal of Strength & Conditioning Research 22.2 (2008): 455-463.

  • Ritz, P., et al. "Effects of changes in water compartments on physiology and metabolism." European journal of clinical nutrition 57.S2 (2003): S2.

  • Häussinger, D., et al. "Cellular hydration state: an important determinant of protein catabolism in health and disease." The Lancet 341.8856 (1993): 1330-1332.

  • Popkin, Barry M., Kristen E. D'anci, and Irwin H. Rosenberg. "Water, hydration, and health." Nutrition reviews 68.8 (2010): 439-458.

  • Kraft, Justin A., et al. "The influence of hydration on anaerobic performance: a review." Research quarterly for exercise and sport 83.2 (2012): 282-292.

  • Maughan, Ronald J., and Louise M. Burke, eds. Handbook of sports medicine and science, sports nutrition. John Wiley & Sons, 2008.

  • Prior, Barry M., et al. "Muscularity and the density of the fat-free mass in athletes." Journal of Applied Physiology 90.4 (2001): 1523-1531.

  • Sillanpää, Elina, et al. "Body composition in 18‐to 88‐year‐old adults—comparison of multifrequency bioimpedance and dual‐energy X‐ray absorptiometry." Obesity 22.1 (2014): 101-109.

  • Pateyjohns, Ian R., et al. "Comparison of three bioelectrical impedance methods with DXA in overweight and obese men." Obesity 14.11 (2006): 2064-2070.

  • Saunders, Michael J., JENNIFER E. Blevins, and CRAIG E. Broeder. "Effects of hydration changes on bioelectrical impedance in endurance trained individuals." Medicine and science in sports and exercise 30.6 (1998): 885-892.

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