Potassium is essential for all living things; if you were to stop consuming potassium you would eventually die.
Three essential electrolytes we need are sodium, potassium, and calcium. Our modern diet has many times as much sodium as we can use but less potassium and calcium than we should get. Because of this most of us should seek potassium rich foods to better balance our electrolytes.
Well, potassium helps to maintain normal nerve and muscle activity, especially in the heart, and it also helps to maintain the osmotic pressure within your cells. Additionally, it also assists in the cellular metabolism of carbohydrates and protein.