Continued at the back Application Note 07-2017 Introduction Sweating allows the body to regulate its temperature. It causes a decrease in temperature through evaporative cooling at the skin surface. When individuals are in hot weather or their muscles heat up due to physical activity, more sweat is produced in order to cool down. Sweat is mostly water with small amounts of electrolytes, which include sodium (Na + ), potassium (K + ), calcium (Ca 2+ ), and magnesium (Mg 2+ ). As sweating increases, electrolyte composition in the body decreases. The concentrations of electrolyte loss can vary among individuals. Measuring the electrolyte losses from athletes’ sweat could assist health professionals in planning personalized water and electrolyte replacement strategies. This

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