Bananas are well-known for being high in potassium. This essential mineral plays a vital role in muscle function, nerve transmission, and maintaining a healthy balance of fluids in the body. A medium-sized banana contains around 422 milligrams of potassium, which is about 12% of the recommended daily intake for adults. Bananas are also a convenient and nutritious snack, often praised for their energy-boosting properties. Additionally, they are low in calories and rich in vitamins, making them a popular choice among health-conscious individuals. Overall, bananas are an excellent dietary source of potassium and other beneficial nutrients.