RLRH: the next big performance supplement?


Here’s your free but abridged version of this week’s “Run Long, Run Healthy” newsletter. Subscribe here to receive the full edition with more on the latest scientific articles and research on training, nutrition, shoes, injury prevention, and motivation.

Is Urolithin A the Next Big Performance Supplement for Runners?

Could a compound from pomegranates be the next endurance-boosting secret weapon?

Scientists say Urolithin A may help your mitochondria recover faster and improve aerobic fitness — but does the research really hold up for runners? 🏃‍♀️

Click to see what the latest study found (and whether it’s worth the $$$).

RELATED ARTICLE: Creatine For Runners: What It Does + 3 Recommended Supplements

NEW: The Consequences of Neglecting Strength Training For Runners (And How To Start), with Jason Fitzgerald

Jason Fitzgerald of Strength Running gives a masterclass in strength training for runners: the benefits, how to get started, and the minimum effective dose—before getting into a wider conversation about injury prevention, performance plateaus, sports science learnings, and longevity.

Or listen and subscribe to the show wherever you get your podcasts:

The Crazy Effect A Marathon Has On Your Body

What really happens to your body after 26.2 miles? New research from Boston Marathon finishers reveals something most runners never think about — and it’s not just sore legs.

RELATED ARTICLE: Running Recovery: The Best Post-Run Routine

🎙️ Live from NYC: The Future Of Racing & Running Technology

Recorded live in New York City during the 2025 TCS NYC Marathon weekend, this special Marathon Handbook Podcast episode looks ahead at what’s next for the sport. 🧡🙌

We’re joined by TCS futurist Bill Quinn, who explores how AI, digital twins, and smart gear will shape the marathons of the future, and elite American marathoner Colin Bennie, who shares how today’s pros are adapting.

A must-listen for anyone curious where running is headed next. 🗽🎧

Is Durability the Most Important Asset for Marathoners?

What matters more on marathon day—your VO2 max, your threshold… or how long you can hold them before they start to crumble? A revealing new study tracked real-world marathoners from the lab to London’s finish line—and one surprising predictor separated fast finishers from fade-to-black finales.

Hint: what you do late in long runs (and how you fuel them) might matter more than you think. Want the full scoop—and what to change in your training?

READ MORE

RELATED ARTICLE: Threshold Training Guide for Runners: Your Path to a New PR

That’s all for now. Thanks for reading. As always—Run Long, Run Healthy.

~Brady~

Marathon Handbook

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