Tread Lightly Running Science Podcast

The Tread Lightly Running Science Podcast provides data-driven, evidence-based running advice in a practical, accessible, and inclusive manner. Each week provides a science-based episode on how to run faster, marathon training, fueling, injury prevention, and more. Tread Lightly Running Podcast is co-hosted by Amanda Brooks and Laura Norris, MSc. Together, they have over 20 years of coaching experience and have helped thousands of runners reach their goals through 1:1 coaching and group training. They've appeared in Runner's World, SELF, NPR, Outside, and other major media.

Tread Lightly Running Science Podcast is a sports podcast hosted by Amanda Brooks and Laura Norris, with 186 episodes on record and a Required Pod Score of 80.

Amanda Brooks and Laura Norris hosts Tread Lightly Running Science Podcast, a sports show with 186 episodes published.

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  Episode #186

  The Science-Backed Benefits of Endurance Training

  Oct 3, 202634 min

  Running is not bad for your knees - if anything, consistent running is remarkably beneficial for your cardiovascular, metabolic, and mental health. In this episode, we delve into the research around running, disease risk, and mortality/longevity. You will learn how running improves heart health, lowers cancer risk, helps you sleep, and more. In this episode, you’ll learn about: ✅ How endurance training changes your heart ✅ The impact of running on cardio-metabolic disease risk ✅ How consistent running affects your musculoskeletal system ✅ How endurance training improves sleep ✅ The impact of running on brain health ✅ The immune system benefits of running ✅ How running impacts longevity Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris. Media kit available to interested sponsors upon request. References PMID: 28365296 PMID: 26178328 PMID: 31103650 PMID: 29342063 PMID: 40664502 PMID: 31036563 PMID: 2471166 PMID: 38355154 PMID: 30991724 PMID: 25082581 If you enjoyed this episode, you may like: Running for Health vs Running for Performance (14 Nov 2025) How Much Do Genetics Impact Your Running Performance? (30 Aug 2024) Hybrid Training as Health Training with Dr. Alyssa Olenick (6 Sept 2024) How Much Does VO2max Actually Matter? (3 Oct 2025) https://lauranorrisrunning.substack.com/p/does-running-increase-your-risk-of 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/

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  Episode #185

  What the Data Says About Current Trendy Recovery Tools

  Sep 26, 202637 min

  Recovery tools have proliferated in the running world over the past few years: red light therapy, ice plunge buckets, peptides, and more. However, the expensive price tag does not guarantee efficacy. In this episode, we look at the data behind various recovery tools and if they actually work - or if they just come with a powerful placebo effect. In this episode, you’ll learn: ✅ How the placebo effect interacts with recovery tools ✅ If pulsed electromagnetic field mats improve recovery ✅ How red light therapy can be used for injury healing ✅ If peptides are safe to use ✅ If Whoop and Garmin accurately estimate your training readiness and recovery ✅ The effective drivers of recovery Thank you to Our Sponsors: ✨ Join Amanda on the Japan Running Retreat: https://www.wildexplorers.travel/tours/wild-japan-running-retreat-with-amanda-brooks ✨ Use link to enter Run to the Finish Fall Training Support Giveaway, featuring podcast sponsors Mizuno, Title Nine, and more: https://runtothefinish.com/fall-training-support-giveaway/ Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris. Media kit available to interested sponsors upon request. References PMID: 27141153 https://www.yourdietsuckspodcast.com/your-diet-sucks-podcast/why-is-everyone-using-peptides PMID: 40756949 PMID: 40789979 PMID: 41742004 PMID: 39476109 https://www.scientificamerican.com/article/the-science-behind-the-peptide-craze/ If you enjoyed this episode, you may like: What to Do the Week After a Half Marathon or Marathon ( 28 Aug 2026 ) What to Eat Before Runs, Recovery Nutrition, and Low Energy Availability (26 July 2024) 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/

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  Episode #184

  GLP-1s, Nomio, UCAN Gels, and Other Trendy Supplements with Dietitian Alex Larsen

  Sep 19, 202641 min

  Are broccoli sprout shots the secret to your next PR? Will U-Can gels help you manage weight? And are greens powders a scam or magic bullet? We sit down with registered dietitian Alex Larson, the founder of Alex Larson Nutrition. She answers all our questions on GLP-1s, cortisol-reducing supplements, lactate gels, if Laura can make her own Nomio at home, and more. In this episode, you’ll learn: ✅ The difference between GLP-1 medications and “GLP-1-like” supplements ✅ Are superstarch gels worth the money? ✅ Do cortisol reducing supplements work? ✅ Are greens powder a scam or worthwhile? ✅ Are broccoli shots the secret to a PR? ✅ If lactate gels are the next big thing Thank you to Our Sponsors: ✨ Use link to enter Run to the Finish Fall Training Support Giveaway, featuring podcast sponsors Mizuno, Title Nine, and more: https://runtothefinish.com/fall-training-support-giveaway/ ✨ Join Amanda on the Japan Running Retreat: https://www.wildexplorers.travel/tours/wild-japan-running-retreat-with-amanda-brooks Connect with our Guest: https://alexlarsonnutrition.com/ https://alexlarsonnutrition.substack.com/ https://alexlarsonnutrition.com/podcast/ https://www.instagram.com/alexlarsonnutrition Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris. 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/

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  Episode #183

  Is Zone 2 Running Overrated? Understanding the Backlash Against and Science of Easy Running

  Sep 12, 202634 min

  Zone 2 is the magic bullet for improved health and endurance fitness - or it is overrated and spikes your cortisol. You have likely encountered both claims on social media, and neither are correct. In this episode, we dive into the science of zone 2 for runners. We discuss how to set your zone 2 correctly, who should use it, who should ignore their heart rate zones, and what happens if you run slower than zone 2 on your easy runs. Whether you are a new runner or a marathoner, you will learn something from this episode! In this episode, you’ll learn: ✅ How to use zone 2 correctly ✅ Is zone 2 a waste of time for low-volume runners? ✅ Should female runners train in zone 2? ✅ Do new runners need to use zone 2? ✅ Do you get benefits from training in zone 1? ✅ What to do if you feel you cannot run in zone 2 References PMID: 40225831 PMID: 40560504 Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris. If you enjoyed this episode, you may like: The Benefits of Using the Run-Walk Method (17 Oct 2025) Why You Need All Training Zones to Improve as a Runner (29 Aug 2025) 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/

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  Episode #182

  Does Summer Running Really Make You Faster in the Fall?

  Sep 5, 202635 min

  Slower summer runs lead to fast fall races - so you have heard. But as you slog through another humid, hot long run, you may be wondering: is there truth to this adage? In this episode, we discuss ideal fall racing temperatures, all the variables that contribute to fall race performances, and how long heat adaptations actually last. 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: ✅ How long do heat adaptations last? ✅ Other variables that contribute to fast fall races ✅ Could summer training impair your fall goals? ✅ Should you heat acclimate for fall races? ✅ Does your watch’s VO2max predict your fall race time? ✅ What are the ideal racing temperatures? ✅ Can you run a fast fall race if you train in mild temperatures? Tread Lightly Running is hosted and researched by Amanda Brooks and Laura Norris, MSc. Production, show notes, and graphics by Laura Norris. If you enjoyed this episode, you may like: The Science of Running in the Heat and Humidity (22 May 2026) Heat Acclimation Strategies (29 May 2022) Gut Training for Runners with Claire Shorenstein (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/

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