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The Lab Test That Changed Everything for One Roller Derby Athlete

Stepping into a high-tech lab designed for elite athletes isn’t something most people get to do. But when a roller derby athlete tried it out, the results weren’t just surprising—they were eye-opening.

The lab, built to simulate extreme conditions for pro teams, pushed the athlete to pedal for 45 minutes in controlled heat. What they discovered wasn’t just sweat—it revealed three critical mistakes in how they fueled workouts.

Mistake #1: Drinking Too Little, Too Late

Most people assume they know how to hydrate—but lab tests showed otherwise.

After years of training, the athlete still wasn’t drinking enough to match what they were losing. Losing just 1.3% of body weight might not sound like much, but it can slow you down fast. Without realizing it, they were already in the early stages of dehydration halfway through the test.

For anyone who works out hard for over an hour, that’s a wake-up call.

Mistake #2: Ignoring Electrolytes

Sweat isn’t just water—it carries salts too. And this athlete sweats a lot of sodium.

Without replacing those lost electrolytes, plain water can do more harm than good. The body needs a balance, and plain water alone won’t cut it.

Even small signs—like white marks on clothes after a workout—suggest you’re losing too much salt. It’s not about drinking less; it’s about fuelling smarter.

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Mistake #3: Skipping Carbs During Workouts

Most workouts demand energy—not just water. The athlete barely took in any carbs during the test, far below what they needed.

Whether it’s roller derby or long runs, muscle fuel matters. Without carbs, energy crashes quickly.

Pro athletes don’t wait until they’re tired—they refuel every 20 minutes, long before hitting the wall. For the rest of us? Gummy bears might just become the new sports drink.

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The Big Lesson: Small Tweaks, Big Results

The takeaway? Most people don’t hydrate or fuel right.

It’s not about extreme changes—just small adjustments:

• Start drinking before thirst hits.
• Mix in electrolytes, not just plain water.
• Add carbs for longer sessions.

Small tweaks can make a huge difference, whether you’re in a lab or just trying to finish a tough workout.