279. Strava v. Garmin Lawsuit, Uphill Treadmill Threshold, New Study on Low Carb v. High Carb (and Caffeine), and Max Heart Rate Problems!

Some Work, All Play

David Roche and Megan Roche

Running, Sports

4.8 • 2.1K Ratings

🗓️ 7 October 2025

⏱️ 89 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

We studied up on some beefs (Strava v. Garmin, Taylor v. Charli, pastrami v. sirloin) before this awesome episode! The main science topic was a new study evaluating low carb and high carb approaches, with and without caffeine. It’s another brick in the wall supporting higher carb for adaptation.

We also talked about the Strava lawsuit! Last week, we defended Strava like the big fans we are, only for them to file suit against Garmin over decade-old patents a day later. It doesn’t seem to make sense from the outside. But as last week shows, what do we know? We talk about the details and speculate on some theories.

And this one was full of so many great topics! Other topics: Megan’s hungry girl era, uphill treadmill threshold training, our hot (lukewarm) takes on Taylor Swift’s new album, Kilian’s mind-bending States of Elevation project, the new beta fuel gel with electrolytes, a study evaluating advanced foams in trail shoes, and an AI study on sleep and jet lag recommendations, plus a Q+A on forgetting to eat, carbs in team sports, balancing cycling and running, carbs per hour, training in supershoes, doing adventures while following a training plan, why max heart rate isn’t a good metric to track over time (or base HR zones on), calculating hill gradients, and post-exercise ketones.

Taylor Swift’s song “Wood” says “I don’t need to catch a bouquet, to know a hard rock is on the way.” We assume she is talking about the Hardrock 100 mile race and she has a way to get around the lottery. You really can have it all.

We love you all! HUZZAH!

-Megan and David

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Transcript

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0:00.0	Woo! Welcome to the SummerKall Play podcast. We are so happy with you today. Happy Tuesday. It's
0:05.6	Tuesday. And I'm bringing my hungry girl vibes on this Tuesday. Your hungry girl vibes. Does this have any
0:11.3	double meaning? Where are we at? No double meaning. Okay. Very simple meaning, I'm hungry.
0:15.4	You're hungry. Comes from the fact that it is actually Monday when we record this. In rest day,
0:20.3	Monday, sometimes I get so freaking hungry. And that's where we are now. Well, it probably aligns with the studies we've talked about that once you've had hard training or a hard race, your metabolic rate is super elevated. But that it reminded me of is the frozen aisle at the grocery store. Have you seen these hungry man? Oh, yeah. Frozen meals? Yeah. We need to reframe that. Hunger Girl. Hungry girl. Yeah. It's going to sell better. In fact, my parents were at their house, their little cabin, if you hear any background noise, and they have like those poppable popcorn things, and it was skinny girl popcorn. And I'm like, fuck this. I don't like what this is doing. This is the patriarchy. This is body shaming.
0:54.6	I don't like it at all.
0:55.5	We need hungry girl popcorn, which is just popcorn covered in cheese. No, we need hungry girl steak mashed potatoes, like those big frozen aisle sections. We made that. Actually, reminds me we were shopping in the grocery store the other day. And you gave me so much shit for buying cottage cheese. Yeah. Do you remember that?
1:09.2	And then I eat the whole thing out of spite.
1:11.3	Bullshit.
1:11.7	You didn't eat the whole thing.
1:12.4	I was the whole thing.
1:13.6	No, you literally asked me this morning. shit for buying cottage cheese. Do you remember that? And then I eat the whole thing out of spite.
1:11.2	Bullshit. You didn't eat the whole thing. I was the whole thing. No, you literally asked me this
1:14.7	morning, do you think it's still okay? And I was like, no. So it must have been some left. It's in the fridge. There was like the smallest bit left, but it was calling my soul. I was like, I'm hungry.
1:23.8	Goddess cheese, Megan.
1:24.8	I don't know.
1:25.1	You must have been so hungry at the grocery store.
1:26.8	That is such a waste of our time.
1:28.1	So, I mean, it was delicious, actually.
1:29.7	Something about it, which is weird.
1:31.0	I admit. hungry. Cottage cheese, Megan. I don't, you must have been so hungry at the grocery store. That is such a waste of our time.
1:28.2	So, I mean, it was delicious, actually.
	...

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