why are electrolytes needed for heart
As well as the salt content of your bodily cells and surrounding fluids, calcium, magnesium and potassium are also important in fluid balance of your muscles. If your balance of electrolytes is wrong, you can get muscle cramps because the impulses are not firing correctly and muscles contract in spasms. When the levels of sodium are too high, the body retains more water, which also raises the blood pressure (hypertension) as the increased water makes the heart work harder.