Which unit is used to measure the body’s resistance mentioned in the material?

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The main idea is that electrical resistance is measured in the ohm. The body’s resistance describes how much it resists the flow of electrical current, and the standard unit for that resistance is the ohm (Ω). This ties directly to the concept of how tissues, skin, hydration, and other factors influence impedance. Watts describe power, volts describe potential difference, and amperes describe current—none of these directly quantify resistance, so the proper unit for the body's resistance is the ohm.