eli5 how can a bathroom scale determine the body fat, water content and “dry” bone mass just from passing some electrical current?
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The number it comes up with is generally meaningless. It is an estimate based on how the electricity moves through your body. It CAN be useful information, but only in very specific circumstances. Basically, if you are on a regimented diet AND hydration program, and you measure at the same time and circumstances every day (e.g. just after waking up and going to the bathroom). It can be a useful gauge of progress. In almost any other circumstance, it’s worthless.
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