Bananas are an excellent source of potassium, an important mineral for regulating blood pressure, fluid balance, and good nerve and muscle function. They also provide a good source of vitamins C and B6, as well as magnesium.
An average banana has 450 milligrams of potassium and the level of consumption needed for an adult according to the World Health Organization is at least 3,500 milligram per day. Bananas are one of the most frequent fruits in homes and are desired by both children and athletes.