If you’re really gung-ho, when it comes to measuring your total body water, “Using a body fat scale is one of the only ways you can estimate your total body water percentage at home. These scales use bioelectric impedance analysis, which involves sending a harmless electric current through your body. As electricity travels more easily through water, less resistance to the current indicates a higher body water percentage. Although these scales provide good estimates for most people, you should see your doctor for more effective and accurate ways to measure your total body water percentage.”
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