260. Why High Carb Fueling May Improve Body Composition, Controversial News, Weight Vest Warm-Ups, and Workout Intensity!

Some Work, All Play

David Roche and Megan Roche

Sports, Running

4.8 • 1.4K Ratings

🗓️ 27 May 2025

⏱️ 107 minutes

🔗️ Recording | iTunes | RSS

🧾️ Download transcript

Summary

This episode was a total joy with toe warmers in all the right places (and some of the wrong ones)! The main scientific topic was a new study on how high carb fueling may improve heat adaptation. We broaden that out to a question from a listener on the old "calories-in, calories-out" framework, and why that doesn't apply to athletes from evolutionary or exercise science perspectives.

The big takeaway from 2 decades of research: avoiding excessive within-day deficits from training may improve health, performance, and body composition. Eat during hard training, or the body may have to take unhealthy steps to avoid shutting down.

And this one was full of great topics! Other topics: a hopeful update on David's knee heading into Western States, the decision to get a cortisone injection, Megan having enough watts to be confused for an e-bike, a new study on weight-vest warm-ups improving running economy, how we think training theory might evolve based on that study, last week's controversial news in trail running, why we think that love and grace for humans needs to lead the way, and a Q+A on fear of vulnerability, workout intensity, and athlete sponsorship.

Stick around to the very end for the hardest we have ever laughed on an episode!

May your knees stay healthy and may your tooth bags stay hidden. We love you all! HUZZAH!

-David and Megan

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Transcript

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0:00.0	Woohoo. Welcome to the Some Work All Play podcast. We are so happy to be with you today. Happy Tuesday. It's just a...
0:06.2	And I'm delightfully low on oxygen on this Tuesday. Oh my God, me too. We're here at 8,500 feet in
0:12.6	Netherlands, outside Boulder, and doing a makeshift recording studio. We're not even in our little
0:17.6	bedroom. So if any sound is different, that's probably the cabin vibes. And man,
0:22.6	the oxygen is hard to come by. I know. I feel it. It's beautiful. So it's worth it. I'm looking
0:26.7	out right now at the mountains and they are snow capped. The sun is finally coming out and it's got like
0:31.2	some magical vibes. But I was putting all I down for a nap earlier and singing twinkle twinkle little star and between every verse I was like
0:37.8	oh need to breathe this is hard it's kind of hypoxic training actually it's just twinkle twinkle
0:42.9	little star I did one twinkle twinkle and I was like oh fuck me oh yeah and I thought when you were
0:49.5	saying it looks beautiful right now you were actually talking about me who has a beard for like four days
0:54.8	at this stage. I've got the mountain beard going. What is your verdict on the mountain beard?
0:59.3	My mountain beard verdict is I think we should just move here and you should grow that out
1:02.6	and see what happens. No, no, no, no. I look terrible and it is like hell. No one tells
1:08.9	you that that everyone who's ever grown a beard
1:11.4	is the toughest person alive because they get through this phase where their face feels like it's
1:16.8	on fire at all times. It feels like I have lice on my like just my entire jaw line. Have you grown
1:22.2	it out long enough to see how long that lasts for? What is it just like a couple of days?
1:25.6	It never goes away. Honestly, everybody with the beard at all times is uncomfortable. Every single hipster in lumberjack
1:32.3	you have ever seen. Okay, we have the best episode for you. Such good cabin vibes coming and
1:37.9	some good news to share pretty quickly. We're going to start with a knee update on the way to
1:42.2	Western States, then a podcast recommendation.
1:44.6	A study on carbs and heat acclamation.
	...

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