Potassium plays a vital role in maintaining proper bodily functions. It is essential for nerve transmission, muscle contraction, and fluid balance within cells. Sufficient potassium levels help regulate heart function and blood pressure, reducing the risk of cardiovascular issues. Additionally, it assists in the proper functioning of the kidneys and contributes to overall cellular health. Athletes, in particular, need adequate potassium to counteract losses through sweat and maintain optimal performance during physical activities.