Adding electrolytes to your fluids is a matter of homeostasis that our bodies require. They are an intricate part of what keeps our hearts ticking too. Buying electrolyte water from stores can be iffy and reading the labels are important. As an example what WholeFoods sells as Alkaline & Electrolyte Water contains (purified water, potassium bicarbonate and magnesium sulfate) only. I buy from The Vitamin Shop BodyTech Liquid Electrolytes Hydration which provides (magnesium 45mg, chloride 375mg, sodium 100mg, potassium 150 mg, sulfate 20mg). The WF bottle does not offer a breakdown of vitamin contents. I put 1/2 tsp in 32 ounces water per day. This is why it’s important to read labels.