Coconut water has gone from a tropical drink enjoyed mainly in warm climates to a popular beverage found in supermarkets, gyms, cafés, and health-food stores around the world.

It is often marketed as a natural source of hydration and electrolytes, and many people reach for it after exercise or on a hot day. Because it comes directly from young coconuts, it can also seem like a healthier alternative to conventional soft drinks or artificially flavored beverages.

But coconut water isn't a miracle drink.

Some of its benefits are real, while other claims surrounding it have been exaggerated. It contains useful nutrients, but it also contains natural sugars and potassium, and the nutritional profile can vary considerably between fresh coconut water and packaged products.

So what should you actually know before making coconut water part of your routine?

Here are 10 facts that may surprise you.

1. Coconut Water Isn't the Same as Coconut Milk

This is one of the most basic and most frequently misunderstood facts.

Coconut water is the naturally occurring liquid found inside a coconut.

Coconut milk, on the other hand, is made by processing the white flesh of mature coconuts with water.

The two products have very different nutritional profiles.

Coconut water is generally relatively low in fat and calories and contains naturally occurring electrolytes and carbohydrates.

Coconut milk contains considerably more fat and calories because it is made from coconut flesh.

That means you shouldn't assume that anything labeled "coconut" has the same nutritional properties.

When you're buying a beverage for hydration, make sure you're actually looking at coconut water, not coconut milk or a coconut-flavored drink.

2. Coconut Water Contains Electrolytes

One reason coconut water became popular as a sports and wellness beverage is its electrolyte content.

Electrolytes are minerals that carry electrical charges in the body and help support important functions such as:

• Fluid balance
• Nerve signaling
• Muscle contraction
• Normal cellular function

Coconut water naturally contains minerals including potassium, sodium, and magnesium, although the exact amounts vary.

Potassium is particularly notable.

A serving of coconut water can provide a meaningful amount of potassium, which is one reason the drink is sometimes described as a natural electrolyte beverage.

However, this doesn't automatically make coconut water superior to every sports drink in every situation.

The ideal beverage depends on what your body actually needs.

3. It May Help With Everyday Hydration

Coconut water is mostly water, so it can contribute to your daily fluid intake.

For someone who enjoys the taste, it can be a refreshing alternative to sugary soda or other sweetened beverages.

Its naturally occurring minerals may also make it appealing after sweating.

But here's an important point:

Plain water remains an excellent hydration choice for most everyday situations.

You don't need coconut water every time you feel thirsty.