Whether you are running in a 5k or attempting hot yoga for the first time, replenishing expended electrolytes after a workout is extremely important for the recovery process. Electrolytes regulate many things including muscle contraction, heart rate and balance of body fluid including pH levels. Drinking tap or bottled water will not replace electrolytes. While sodium and potassium are important, you also need magnesium, chloride, phosphate, sulphate, calcium ions and bi-carbonates.
Sports drinks as a source of regular hydration are not the best option as they contain artificial sweeteners, high sodium and a lot of sugar. Coconut water, not from concentrate, is a naturally fat free drink that will replenish all of your lost electrolytes. Just one cup of coconut water contains 520mg of potassium along with high levels of magnesium and other minerals. Emergen-C is also great for replacing lost electrolytes while also boosting your immune system. Mineral drops found at your local health foods store work well too.
To increase fitness and boost overall performance, make sure to hydrate and replenish after each workout!