The 3 Hour Sit
It's Labor Day, college football is back, and Neil just surfaced from a noon kickoff at midnight. Here's what a three-hour sit actually does inside a body with type 1 diabetes: your leg muscles clock out, sugar hangs around, and that afternoon high parks itself on your CGM...
The episode, word for word
Happy Labor Day, everybody. The one holiday that's actually about work, and most of us are going to celebrate it by sitting in four different locations for nine consecutive hours. Me? I plan to honor the American worker from a lawn chair. It's called respect.
Also, and this is related, college football is back. Which means Saturday I sat down for a noon kickoff and came back to consciousness sometime around midnight. Look, a college football game is three and a half hours of sitting, minimum. Unless your team is bad. If your team is bad, it's three and a half hours of pacing and yelling at your TV, which honestly counts as cardio. My most active Saturdays are, statistically, our worst defensive performances. I have the step data. I could publish.
I'm Neil Greathouse, this is Your Best T1D Year, and today is the last day of problem week. I'm going to show you what those long sits actually do to your blood sugar, and then Wednesday, the fix starts, and the fix is going to shock you with how small it is.
Okay, here's what happens during a three-hour sit. Your leg muscles, the biggest engines you own, they clock out. Fully. They put up the little "back in 15 minutes" sign, except it's three hours. And idle muscles barely pull any sugar out of your blood. So the sugar just hangs around in your bloodstream like it's waiting for a table, your insulin has to do all the work by itself, and your number drifts up and parks. That stubborn afternoon high you swear you didn't earn? You might not have eaten your way into it, people. You might have SAT your way into it.
Now, you've maybe heard the phrase "sitting is the new smoking." Which, okay, calm down. It's a little dramatic. Nobody's sneaking a folding chair behind the gym. But the research underneath the drama is real, so let me give you the actual study. 2012, Diabetes Care. They compared a long unbroken sit against the same sit interrupted by two minutes of easy walking every 20 minutes. Two minutes. Count it: one, two. Strolling pace. Grandma-at-a-garage-sale pace. And that alone meaningfully lowered blood sugar and insulin levels compared to sitting straight through. Now, that study was in overweight adults, not type 1, and I'll always tell you that straight. But the muscle machinery is identical in every human, and Wednesday I'll show you exactly how it works. There's a door involved. It's a whole thing. You're gonna love it.
One more, because this made me sit up, which, given today's topic, felt appropriate. This idea has officially graduated. The American Diabetes Association's 2025 Standards of Care, the actual rulebook they hand your endo, now says: break up sitting at least every 30 minutes. That's not a podcast guy's opinion anymore. That's in the manual. Your endo's manual is out here agreeing with me. What a time to be alive.
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Your challenge this week, still gentle: one time, when you catch yourself deep in a long sit, just get up. Walk to the kitchen. Do a lap. Consider it a test drive of the whole challenge.
Newsletter and free tracker at yourbestt1dyear.com. About 2,000 of us in this thing now, all over the world.
You're not lazy. Your day is just wall-to-wall chairs, and nobody ever told you the chairs were the problem. Now you know, and knowing is half the... you know what, that's a G.I. Joe reference and I'm going to let it go.
We are the ones, people. Living with it, loving someone with it, raising a kiddo with it. We are the ones. My name is Neil. Happy Labor Day. I'll see you Wednesday.
This is the episode script as read on the mic. It's education and encouragement, not medical advice. Talk to your care team before changing anything about your management.
