The cucumber and watermelon in this recipe contain potassium and magnesium, electrolytes that play a vital role in helping your body absorb water and move it through your bloodstream. Without electrolytes, your body would struggle to maintain fluid balance in your cells, where it’s needed to prevent dehydration.

The coconut water is also high in electrolytes, specifically potassium, magnesium, and calcium. I don’t particularly enjoy drinking coconut water plain, but I like the tropical flair it adds to blended watermelon, which can otherwise taste too sweet.

The acid from the lime juice and a pinch of sea salt help round out the flavors and add a bit of sodium, another electrolyte that’s typically present in lower amounts in coconut water. The sea salt is optional; depending on your brand of coconut water or the ripeness of your watermelon, you may find you don’t need it.