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    Tread Lightly Running Podcast

    Tread Lightly Running Podcast

    About

    The Tread Lightly Running Podcast provides data-driven, evidence-based running advice in a practical, accessible, and inclusive manner. . You'll learn about how to run faster, marathon training, the latest fueling science, how to prevent running injury, 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.

    Hosted By

    Amanda Brooks and Laura Norris

    What is Zone 3 Really Doing to Your Running Fitness? [Remastered]

    What is Zone 3 Really Doing to Your Running Fitness? [Remastered]

    December 27, 2025
    33m

    Will running in the “grey zone” cause you to flounder - or appropriately dosed amounts let your fitness flourish? This remastered episode, originally from January 2024, provides a nuanced discussion on how moderate intensity running can be beneficial in the correct doses - but why you don’t want to train every day in this zone.

    ✨Join us on Patreon.com/treadlightlyrunning or subscribe on Apple Podcasts starting in December, when we’ll be releasing special subscriber-only content!


    In this episode, you’ll learn:

    ✅ What is the grey zone in running?

    ✅ The benefits and detriments of running in the grey zone

    ✅ How to use the talk test

    ✅ When to use zone 3 training

    ✅ Should you do all of your long runs at marathon pace?

    ✅ What is polarized training (hard days hard, easy days easy)

    ✅ Marathon pace/zone 3 workouts

    ✅ Zone 2 vs zone running when you are a beginner runner

    If you enjoyed this episode, you may also like

    🎧 Why 80/20 Doesn’t Work For Every Runner (12 Dec 2025)

    🎧 Why You Need All Training Zones to Improve a a Runner (29 Aug 2025)

    🎧 Does Zone 2 Actually Matter for Runners? (6 June 2025)


    References:

    🔬 PMID: 33344993

    🔬 PMID: 36900796

    🔬PMID: 35661059

    🔬PMID: 26578968

    🔬Skiba, Scientific Training For Endurance Athletes

    ⁠https://www.frontiersin.org/articles/10.3389/fspor.2019.00070/full⁠


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