“Performance is your potential minus interference - and the brain often interferes with how well we want to do.” Many runners struggle to translate their training to racing, because of race day nerves, negative self-talk, or fear of discomfort. In this episode, we are joined by Dr. Trent Claypool of Summit Sport Psychology to learn how to embrace discomfort, use positive self-talk, and train your brain for your peak performance.

Thank you to our sponsors:

✨ Tailwind: Complete sport nutrition made simple, including hydration mixes, high-carb sport drinks, endurance fuel, and recovery mixes. Use code TREADLIGHTLY20 at https://tailwindnutrition.com/TREADLIGHTLY for 20% off your first purchase.

In this episode, you’ll learn:

✅ Why accepting discomfort is more effective than avoiding discomfort

✅ How to train to tolerate discomfort

✅ How to use positive self-talk effectively

✅ The benefit of staying present in the moment

✅ How to use visualization

✅ The role that stress hormones play in sport psychology

Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris.

About our guest:

Dr. Trent Claypool is a licensed sports psychologist with 15 years of experience. He has worked with hundreds of athletes both virtually and personally, including NCAA and professionals.

You can connect with Dr. Claypool at https://summitsportpsychology.com/ and https://www.instagram.com/summit.sport.psychology

In this episode, we bring a nuanced, science-based approach to many hot topics in running right now. What causes muscle cramps? Does Pilates count as strength training? Should slower runners wear carbon plated shoes? Is it possible to overfuel on long runs? Our goal is to provide individualized guidance, rather than click-baity universalized proclamations.

In this episode, we provide our informed takes on:

✅ What actually causes muscle cramps (according to science)

✅ If taking walk breaks discounts a marathon effort

✅ If back of pack and midpack runners benefit from carbon plated shoes

✅ Why Pilates does not replace resistance training

✅ Is there such a thing as overfueling on long runs?

Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris.

References

🔬PMID: 32796418

🔬PMID: 39405382

🔬PMID: 40059889

🔬https://www.sciencedirect.com/science/article/pii/S2405844022028523

🔬 PMID: 28543751

🔬PMID: 37239690

🔬PMID: 33967223

🔬PMID: 38876695

🔬PMID: 41759826

🔬PMID: 41191077

If you enjoyed this episode, you may like:

🎧 Sweat, Sodium, and Running Performance: What the Science Actually Says (24 July 2026)

🎧 The Benefits of Using the Run-Walk Method (17 Oct 2025)

🎧 Cutting through the Running Shoe BS (23 Jan 2026)

🎧 Gut Training for Runners with Claire Shorenstein, MS CSSD (10 July 2026)

Let’s stay connected:

➡️ Tread Lightly Running Podcast on Instagram: https://www.instagram.com/treadlightlyrunning/

➡️ Laura Norris Running on Instagram: https://www.instagram.com/lauranorrisrunning/

➡️ Subscribe for weekly evidence-based newsletters, straight to your inbox, on https://lauranorrisrunning.substack.com/

➡️ Run to the Finish on Instagram: https://www.instagram.com/runtothefinish/?hl=en

➡️ Thousands of running gear reviews and training guides: https://runtothefinish.com/

You likely have heard both sides of the debate, as one side argues that sodium supplementation is overrated, while the other side shills sports drinks with a full gram of sodium. In this episode, we dive into the research to present you with a nuanced, science-backed discussion on the widely varying sodium needs of runners. You will learn how to determine your sweat rate and sodium needs, if sodium will prevent muscle cramps, and more.

Thank you to our sponsors:

✨ Tailwind: Complete sport nutrition made simple, including hydration mixes, high-carb sport drinks, endurance fuel, and recovery mixes. Use code TREADLIGHTLY20 at https://tailwindnutrition.com/TREADLIGHTLY for 20% off your first purchase.

In this episode, you’ll learn:

✅ Sweat rate vs sweat concentration

✅ The role that sodium plays in hydration, carbohydrate absorption, and more

✅ If sodium supplementation prevents muscle cramps

✅ How to know if sweat testing is appropriate or not

✅ The signs and symptoms of too much and too little sodium

✅ If sodium pre-loading works before a race

✅ Ideal sources for sodium supplementation during runs

✅ Why too low sodium can be dangerous

Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris.

References

🔬PMID: 42190283

🔬PMID: 40089940

🔬PMID: 41561158

🔬 https://link.springer.com/article/10.1186/s44410-025-00011-9

🔬 PMID: 36431252

If you enjoyed this episode, you may like:

🎧 What Your Running Gel Label Actually Means with Kylee Van Horn (8 Aug 2025)

🎧 The Science of the Long Run (17 July 2026)

Let’s stay connected:

➡️ Tread Lightly Running Podcast on Instagram: https://www.instagram.com/treadlightlyrunning/

➡️ Laura Norris Running on Instagram: https://www.instagram.com/lauranorrisrunning/

➡️ Subscribe for weekly evidence-based newsletters, straight to your inbox, on https://lauranorrisrunning.substack.com/

➡️ Run to the Finish on Instagram: https://www.instagram.com/runtothefinish/?hl=en

➡️ Thousands of running gear reviews and training guides: https://runtothefinish.com/