I have some physical understanding, but how can they tell my body fat % and how accurate os that?
In: Technology
Imagine you’re standing on the scales with bare feet. The scales send tiny bits of electricity into one foot, which travels up one leg, down the other, and out the other foot and back into the scales.
Electricity travels through fat and muscle (and even water) slightly differently, so depending on what the scale gets back through the second foot it can work out what you are made of.
They don’t measure your fat and muscle in your upper body, so the result is mostly just your legs.
They aren’t very accurate, because as mentioned earlier electricity also travels through the water, which will mess up the results the scale gives you.
They can be used to measure fat gain/loss over time, however, as long as you’re never really thirsty.
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