308. Sub-2 Hour Marathon Fueling, The High Carb Plus Bicarb Era, Strides v. Plyometrics Study, Supershoe Evolution, and Iron Theories!
Some Work, All Play
David Roche and Megan Roche
4.8 • 2.1K Ratings
🗓️ 28 April 2026
⏱️ 99 minutes
🧾️ Download transcript
Summary
We made an unfortunate impulse purchase (you'll see) before this great episode! The main topic revolved around the world records at the London Marathon, including Sebastian Sawe’s 1:59:30 winning time. We discuss his mid-race fueling, bicarb use, shoes, and so much more.
Plus, there was an important study measuring the differences in mechanical output between sprints, strides, and plyometrics. This study could be the missing link that identifies why strides are such a ubiquitous part of elite training approaches.
And there were tons of fun topics! Other topics: the purchase David is not proud of, a game theory hypothetical, a high-carb case study, the amazing Women’s Gear Index, luxury gear, an existential question on life and training, a potential treadmill study, barefoot shoes, iron dosing theories, and lots more.
Come for the carb talk, stay for the knowledge that David will occasionally have the worst takes you have ever heard. We take back every thought we head about pressing the red button.
We love you all! HUZZAH!
-David and Megan
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Transcript
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| 0:00.0 | Woo. |
| 0:01.4 | Welcome to the Some Work All Play podcast. We are so happy with you today. Happy Tuesday. It's Tuesday. And we're bringing out the magic wand on this Tuesday. The magic wand. It's going away to start a podcast. Whoa, Megan. Yeah. In many ways. Okay. Do you know what I'm talking about? I think I do, which is the home shockwave machine that I bought. Yeah. So about a week ago, I came downstairs and this was early morning. It was 5 a.m. 5 a.m. And you're like, Megan, I have something to tell you. And I'm just like, oh, no. You're like, I bought a home shockwave machine on Amazon. Yeah, I did. And I was like, bro. What are you doing? That's kind of how you know you hit a little point. So there aren't that expensive on Amazon. I was like, bro, what are you doing? That's kind of how you know you hit a |
| 0:39.6 | little point. So they aren't that expensive on Amazon. The question is, do they work? Because at this |
| 0:44.7 | price, it would be like buying a car for 50 bucks. I mean, legitimately, it's like 80 times cheaper |
| 0:50.3 | than what they use in federal office. This is because I can't make the time to get these appointments. So I just haven't been doing shockwave and I need to do it for my heel, which regressed a couple weeks ago just randomly when I thought it was 100%. So Megan, I got desperate at 4.45 a.m. And I was like, okay, I'm going to wait until Megan comes down. This is a big purchase. We always talk about big purchases. |
| 1:11.9 | So I need your advice on this. |
| 1:25.7 | And then it just sat there in one of my tabs haunting me. Just like, Edward, Edgar Allen Poe, like a heartbeat. And I'm like, I got to go for it before she wakes up because she's going to talk me out of this, doesn't she? I got to click that button. I would have talked to you out of it. |
| 1:26.1 | Yeah, you would have. |
| 1:27.6 | And we wouldn't have had this story on the podcast. It's true. |
| 1:28.3 | It's true. |
| 1:28.9 | I'm just paying $1,200 for content. |
| 1:31.1 | You're of it. Yeah, you would have. And we wouldn't have had this story on the podcast. It's true. It's true. I'm just paying $1,200 for content. You're doing it for the content. My big worry is what if the settings are different, right? Because thankfully, I do have an MD PhD, though you're not trained in this particular field, but I trust you to to administer it. But what if the settings are wrong and I just |
| 1:45.3 | need surgery? And I think that would be the funniest way to end this story is if I just went for it |
| 1:51.0 | with the home shockwave. And as a result, my career is over, which honestly I would deserve. |
| 1:57.5 | So you asked me to do the shockwave. And so I was down there on the floor just floor just like rolling that wand around your foot and you were giving me so many affirmations. Oh, Megan, you crushed it so hard. You were amazing. I was just incredibly impressed. I've gotten a lot of shockwave in my life recently. And I was just like, damn, my girl's made for this. You're the number one pick in the shockwave NFL draft. You're like, you're using your degrees. I'm like, all I'm doing is doing little circles over here with this wand. So the big conclusion is, don't do this at home. I was telling Megan, maybe we shouldn't even talk about this. We'll report back. If it does work, that would be pretty transformative. You might need an MD PhD to apply it, but I might also need surgery. So please, |
| 2:35.1 | please don't do this. And this is once again kind of going down the rabbit hole of David |
| 2:40.9 | doing dumb shit. But maybe it's a good thing, right? So on one side, like the dumb shit, |
| 2:47.0 | like 95% of it doesn't work and hopefully doesn't lead to surgery or negative outcomes, but it peters away. But the 5% that does becomes like dogma and gospel in the running community, you know, like the high carb, by carb, the stuff we're going to talk about in the future, the stuff I go over the top with and then things like the heat suit or maybe the home shockwave, perhaps not. David's just lying on the floor of the bedroom using shockwave personal lubricant. Yeah, exactly. So we got this machine and it comes in, and I'm like desperate to use it, right? Because my foot needs it. I need something in my life and I still can't get into PT with our time demands. And so I'm like, oh shit, to do this, you need like ultrasound fluid. And I don't know where we would get that. |
| 3:41.8 | Ultrasound goop. Actually, maybe we should have just gone to our cabinet and then like, we're going to put some molten on this. Oh, yeah, some hydro gel would be perfect. Perfect. He'll need some sugar. And so it's just a dilemma. And then I looked it up online. And you can use personal lubricant for these purposes. So we went and got some store brand K-Y lubricant, and it worked like a charm. It was fantastic. For $4.99, and we did this in the Mountain grocery store where we know Carlos, he's the guy that does check out. And we just like every weekend, we go and have conversations with Carlos. He's our man. Man, we hit it off every single week. He's like my best |
| 3:58.1 | friend truly with young kids. Yeah, but now he thinks you're buying $499 personal lubricants for our use. He's going to be so disappointed in you. The best part of he's like, how's your week? I was like, good. We went on a date trip. Here's my personal lubricant. And I'm buying the cheapest type possible. It's like, my girl deserves the worst. It was the only thing you bought to. |
| 4:15.5 | You should have walked into the store and bought like some frito, some personal lubricant, some like chips. Personal lubricant and a banana. That would be perfect. Yeah, I feel like it's like when you go in and buy pregnancy tests, you're like, I need to buy some cereal. I need to buy some other things. You really should have mixed it up. So yeah, this is where my life is right now. And at the same time to just like really drill, |
| 4:34.8 | drill, |
... |
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