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Message: <blockquote data-quote="Skyrider" data-source="post: 2712137" data-attributes="member: 588998">Yes, I'd been looking at those.Whilst I'm sure that they are very accurate in some areas, I still wonder about their accuracy with regard to visceral fat, which is a primary area of interest.Whilst these devices have come a long way, they are not good at everything & the algorithms are often flawed. For example, I have a Withings sleep tracker, which is absolutely hopeless, coming up with results which are not humanly possible. I suppose it is of some use for spotting trends, if not absolute data.<h3>What is bioelectrical impedance analysis?</h3>"Smart scales and other devices with bioelectrical impedance analysis (BIA) send a weak electrical current through your body to determine your body composition. Basically, fat and muscle have different levels of electrical conductivity. That affects how quickly the current travels from one end of your body to the other, which is then used to indirectly estimate body fat, muscle, water, and bone mass.BIA devices are more accessible than other methods of measuring body composition, but they’re also less accurate. Hydration levels, exercise, eating, room temperature, quality of product, and electrode placement can all skew results. For example, with smart scales, you’re generally creating a circuit from one foot to the other. That means a typical scale likely only measures your lower body because currents take the fastest route from point A to point B. If you carry most of your body fat in your upper body, you won’t get a reliable reading. Smart scales may also use algorithms that don’t adequately account for your specific body type, ethnicity, or gender.That’s why you should take smart scale results with a heavy grain of salt. They’re best used to get a ballpark estimate and casually view your trends over time."</blockquote>

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