In some ways, coconut water is more hydrating than water, but don’t completely replace your water intake with coconut water. Coconut water is a good choice after a workout or recovering from an illness. Coconut water contains natural electrolytes, like potassium, manganese, and sodium, which rehydrates your body. However, coconut water, unlike water, contains some sugar and calories. Plus, if you have high blood pressure, coconut water is not a good option because it contains sodium, which worsens high blood pressure.