Repetitive excessive sweating can also lead to de-mineralisation depriving muscle bone and cartilage of the invaluable materials necessary for after-exercise regeneration When horses are subjected to prolonged hard work during warm weather they generate excess heat. This heat must be dissipated by sweating. If the work is particularly intensive or the weather particularly warm there may be a significant amount of body salts dissolved in the body fluids and thus lost through sweat. This is called electrolyte loss. Excessive loss or imbalance of electrolytes can adversely affect the thirst mechanism by failure to replace water loss adequately. There may also be a loss of appetite. In addition repetitive excessive sweating may also lead to de-mineralisation depriving muscle bone and cartilage of invaluable materials necessary for after-exercise regeneration. N.A.F. Electrolyte is a balanced combination of the four essential plasma salts (called cations) sodium potassium calcium and magnes