Electrolytes are tiny minerals in your body that help it work well. They help your heart beat the right way and help your brain send messages. Some important electrolytes are sodium, potassium, calcium, and magnesium. If you don’t have the right amount, you might feel tired, weak, or confused. Your body gets electrolytes from food and drinks. Drinking water and eating healthy foods can help keep your heart and brain strong. Keeping the right balance of electrolytes is very important for feeling good and staying healthy.