Electrolytes are ions that conduct electricity in solution and are essential for life. They maintain proper blood pressure, circulate nutrients, rebuild tissues, and remove waste from the body. Electrolytes like sodium and potassium generate currents across cell membranes in muscles and neurons to activate them. Imbalances in electrolytes can cause muscles to become too weak or contractions too severe. Electrolytes are also crucial for cell and immune system health, bone growth, organ function, and maintaining the body's internal balance.