Label guide · Sport & movement
Water, Electrolytes or a Sports Drink
Three different jobs around activity. Read the label before treating any of them as the automatic upgrade.
The useful question is not “what do athletes drink?” It is what this particular drink supplies for this particular moment. Water, an electrolyte product, and a carbohydrate-containing sports drink may all be sold in the same aisle, yet their labels can describe very different tools.
Water is the baseline, not a failure to optimize
USADA’s hydration guidance says that, outside exercise, most fluid intake for athletes should come from water and water in foods. It also notes that hydration needs vary with factors including body size, activity, temperature, humidity, and sweat loss. That makes a generic bottle recommendation less useful than a close read of the context.
Fluid without added carbohydrate or sodium
Read it as a straightforward drink choice. Do not invent electrolyte or energy claims that are not on its label.
Minerals may be present, carbohydrate may not be
Check sodium, potassium, serving size, and any active ingredients. “Electrolytes” alone does not tell you how much of anything is in the prepared drink.
A sports drink is a defined label question
USADA’s 2026 nutrition guide describes sports drinks as beverages containing electrolytes and carbohydrates to support energy and hydration around exercise. It distinguishes them from energy drinks, which can contain stimulants such as caffeine and are often carbonated. That is a useful category boundary, not a reason to treat every sports drink as right for every person or activity.
Start with the Nutrition Facts panel. FDA explains that serving size is the amount typically consumed, not a recommendation. Every number on the panel applies to that stated serving. If you drink two servings, double the listed carbohydrate, sodium, sugars, and calories before comparing it with another drink.
One transparent calculation
USADA gives a simple way to calculate carbohydrate concentration: grams of carbohydrate ÷ milliliters of serving × 100. Their worked example uses 25 g of carbohydrate in 340 ml: 25 ÷ 340 × 100 = 7.4%.
The calculation is not a performance verdict. It is a way to see what the label says in a comparable form. If a product is concentrated, powdered, or made with a different amount of water than its instructions specify, the prepared serving changes the result.
Where this guide stops
This publication does not prescribe a hydration plan, tell readers how much sodium or carbohydrate they personally need, or assess health conditions, medications, heat illness, disordered eating, supplement safety, or competition rules. Those questions require an appropriately qualified clinician, dietitian, or sport organization.
- USADA — Hydration 101: What Do I Need to Know?
- USADA — Fueling for Performance, 2026 Nutrition Guide
- FDA — How to Understand and Use the Nutrition Facts Label
Sources consulted September 22, 2026. Names are shown for traceability; this site does not send readers to external links.