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    Some Work, All Play

    Some Work, All Play

    About

    Five to ten topics, sometimes about running, with lots of love and enthusiasm and science. We dig deep into training, races, studies, pop culture, and much more! With Megan Roche, M.D. and David Roche!

    Hosted By

    David Roche and Megan Roche

    284. Game-Changing Study on High Carb, Iron Levels and Energy Intake, New World Records, Race Week Nutrition, and Offseasons!

    284. Game-Changing Study on High Carb, Iron Levels and Energy Intake, New World Records, Race Week Nutrition, and Offseasons!

    November 11, 2025
    1h 31m

    We chocolatized our life before this amazing episode! The main topic was a new study on elite marathoners measuring responses to different carb intakes, finding a 2.6% lower oxygen cost at 120 grams per hour compared to 60 grams per hour. It showed massive carb oxidation rates at high outputs. In 10 years, we might look back on this study as a game-changing moment in the science of endurance performance. 

    And this one had so many cool topics! Other topics: Megan’s biggest uphill treadmill threshold workout, David’s Zwift racing, the strange connection between energy intake and iron deficiency, how hydration could influence stress responses, the predictive power of smiling in pre-race photos, Anne Flower’s 50 mile world record, other records at Tunnel Hill, whether to walk onto the track team, offseason layoffs, race week nutrition, and AI messaging.

    Stick around for a beautiful affirming Listener Corner message! Or you can stick around to learn what we do with the Tupperware. Your choice!

    We love you all! HUZZAH!

    -David and Megan

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    More from Some Work, All Play

    287. Quad Dipsea Course Record! “No Secrets” on Megan’s Racing, Training, and Postpartum Journey

    287. Quad Dipsea Course Record! “No Secrets” on Megan’s Racing, Training, and Postpartum Journey
    December 2, 2025

    286. Why Passive Heat May Improve Performance, A Batman Study, Influencers, JFK 50 Mile, and Cool Persistence Hunting Science!

    286. Why Passive Heat May Improve Performance, A Batman Study, Influencers, JFK 50 Mile, and Cool Persistence Hunting Science!
    November 25, 2025

    285. The Strange Uncertainty of Hemoglobin A1c in Athletes, Thyroid Function and Fueling, Elevated Heart Rate, and Running Form 101!

    285. The Strange Uncertainty of Hemoglobin A1c in Athletes, Thyroid Function and Fueling, Elevated Heart Rate, and Running Form 101!
    November 18, 2025