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Insights for endurance athletes
Training tips, nutrition science, product reviews, and race-day strategies from the Prep team.
The Science of Carb Loading: What Every Endurance Athlete Needs to Know
Discover the latest research on carbohydrate periodization and how to optimize your glycogen stores for race day. We break down the science into actionable steps.
Zone 2 Training: Building Your Aerobic Base
Why 80% of your training should be easy, and how to use heart rate zones to build an unshakeable endurance foundation.
Sarah Chen · Mar 10, 2026 · 6 min
Your First Ironman: A Complete Nutrition Timeline
From the week before to the finish line — a detailed hour-by-hour nutrition guide for your first full-distance triathlon.
Mike Torres · Mar 5, 2026 · 12 min
Best Energy Gels of 2026: Tested and Ranked
We tested 15 popular energy gels across taste, digestibility, carb density, and value. Here are the winners.
Anna Kozlov · Feb 28, 2026 · 10 min
Electrolyte Balance: More Than Just Sodium
Understanding the role of magnesium, potassium, and calcium in endurance performance and how to dial in your electrolyte strategy.
James Parker · Feb 20, 2026 · 7 min
Periodization for Marathon Runners
How to structure your 16-week marathon training block with built-in nutrition periodization for peak race-day performance.
Sarah Chen · Feb 15, 2026 · 9 min
Preventing GI Distress During Long Events
Stomach issues are the #1 DNF reason in ultras. Learn how to train your gut and choose products that won't fight back.
Dr. Lisa Nguyen · Feb 8, 2026 · 8 min
Showing 7 of 24 articles
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