Your kidneys filter your blood again and again every day
Your kidneys are easily the most overworked janitors in your entire body. These two bean-shaped filters suck in about half a cup of blood every single minute, separating out toxins, metabolic waste, and the absurd amount of sodium you ate for dinner. They filter your total blood volume dozens of times a day, converting the garbage into urine so you don't literally poison yourself before lunchtime.

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