Chloride is another electrolyte and, as such, it's necessary for proper body function. Chloride and sodium together create -- you guessed it -- sodium chloride. Sodium chloride is better known as salt. While large amounts of salt are unhealthy, it can't and shouldn't be avoided. It may sound counterintuitive, but salt actually helps you stay hydrated. It helps your body absorb water to help you in intense conditions or help you rehydrate after exertion. In the days following a tough workout in the sun or even an extended vacation in humid climates, it's not only safe to increase your salt intake but recommended [source: McDonald].