Bananas are widely known for their high potassium content, making them a popular choice for those looking to increase their potassium intake. Potassium is essential for maintaining proper muscle function, nerve signaling, and regulating blood pressure. Other fruits like oranges, apricots, and melons also contain potassium, but bananas are often the most recognized source. The phrase "an apple a day keeps the doctor away" reflects the importance of fruits like bananas in a balanced diet. Their natural sweetness and versatility make them a great snack as well.