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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

    306. How the GOAT Fuels, Single v. Double Workouts, Heat and Altitude Study, Caffeine Genotypes, and Building Bone Density!

    306. How the GOAT Fuels, Single v. Double Workouts, Heat and Altitude Study, Caffeine Genotypes, and Building Bone Density!

    April 14, 2026
    1h 33m

    We got overconfident with a shoe experiment before this great episode! It started with a discussion of race-day fueling of Tadej Pogacar (who might be the greatest endurance athlete ever). 250 grams of carbs and 1430 calories for breakfast?! We zoom out to talk about cycling fueling generally, along with possible gender differences.

    Then it was a big science discussion on a new study on heat and altitude that upended some of the older conventional wisdom. There seems to be increasing agreement across studies: heat training builds hemoglobin mass, and it may be additive when combined with altitude.

    And this one was full of awesome topics! Other topics: David’s shoe-alteration experiment that went horribly wrong, Megan’s tips for improving bone density, our upcoming Boston Marathon trip, a study on doing one workout versus two workouts in a single day, how caffeine genotype affect performance, supershoes and injury risk, how to think about sleep, and video games.

    Come for the science. Stay for the greatest roast of all time. David could be served with gravy at Thanksgiving after this one.

    We love you all! HUZZAH!

    -David and Megan

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    More from Some Work, All Play

    305. The Theory of Downhills for Strength and Speed, AM v. PM Training Study, Bicarb Poisoning on Mt. Everest, and Moon Shots!

    305. The Theory of Downhills for Strength and Speed, AM v. PM Training Study, Bicarb Poisoning on Mt. Everest, and Moon Shots!
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    304. The Art of Steady Running, Pregnancy and Sponsorships, A Shocking TUE Dashboard, Heat and Heart Rate, Post-Exercise Ketones, and Bicarb!

    304. The Art of Steady Running, Pregnancy and Sponsorships, A Shocking TUE Dashboard, Heat and Heart Rate, Post-Exercise Ketones, and Bicarb!
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    303. The Weird Science of Carb Mouth Rinses, VO2 Max Limits, Fueling for Performance, Cross Training, and Cramp Prevention!

    303. The Weird Science of Carb Mouth Rinses, VO2 Max Limits, Fueling for Performance, Cross Training, and Cramp Prevention!
    March 24, 2026