A: Electrolytes are essential minerals in your blood and other bodily fluids that carry an electric charge. They're crucial for various bodily functions, including hydration, nerve signaling, muscle contractions, and maintaining proper pH levels. Common electrolytes include sodium, potassium, calcium, magnesium, chloride, and bicarbonate. These minerals play a vital role in keeping your body functioning optimally, especially during physical activity or when you're ill. Maintaining a proper balance of electrolytes is key to overall health and well-being.