Kidneys play a crucial role in the human body. The main job of the kidneys is to clean your blood of excess fluids and waste products. When functioning normally, these fist-sized powerhouses can filter 120–150 quarts of blood each day, producing one to two quarts of urine. This helps prevent waste buildup in the body. It also helps keep electrolytes, such as sodium, phosphates, and potassium at stable levels. Read along to know how to keep your kidneys healthy.