"Snack" Before You Eat
The graduate seminar of movement snacks, with the loudest safety caveat of the month. A 2014 study in Diabetologia coined the term exercise snacks: short, brisk bursts of movement a few minutes BEFORE each meal. Compared to a standard 30-minute...
The episode, word for word
Today we go slightly fancy. Not hard. Fancy. This is the graduate seminar of movement snacks, and it comes with the biggest safety caveat of the whole month, so you've got to stay with me to the end. Deal? Deal.
I'm Neil Greathouse, this is Your Best T1D Year.
Okay. All month: movement after meals. Today: the flip. There's a 2014 study in Diabetologia, a team including a researcher named Monique Francois, and this is literally the study that coined the term "exercise snacks." They took people with insulin resistance and had them do short, brisk bursts of movement, just a few minutes, right before each meal. Uphill walking, a little resistance work, heart rate up briefly. Then eat.
Against a standard continuous 30-minute workout, the little pre-meal bursts won. Average post-meal glucose across the day dropped by about 12 percent, biggest effects after breakfast and dinner. Twelve percent, people, from a couple of minutes. Count it: two, maybe three minutes, and it beat the guy doing the full half-hour workout. Somewhere out there, that guy is still on his treadmill, and he's LOSING.
The logic is our old friend the side door. Remember: muscles pull in sugar when they move. Do it right before you eat, and you're opening the door a couple minutes before the food arrives, so the muscle's already primed when the sugar shows up. You're preheating the oven. It's the difference between the pizza going into a hot oven and the pizza going into a cold one, and yes, I know, I have to stop using pizza examples, pizza and I are in a very complicated relationship, we've discussed this.
So the picture is: a few minutes before dinner, you march up and down the stairs, do some squats, walk the yard fast, anything that gets you slightly winded. Then you eat, and the meal lands on muscles that are already awake and hungry.
NOW. The caveat. And I'm going to be more careful right here than I've been all month, because this one earns it. That study was insulin-resistant adults. Not type 1. And for us, intensity plus insulin on board is exactly the neighborhood where lows live. Getting your heart rate up while your bolus is active can drop you fast. So hear me, people: this is not a "try it tonight because a podcast guy said so" move. This is a "talk to your care team first, check your number and your arrow, fast carbs within arm's reach" move. I will never give you doses or adjustments. Ever. That conversation belongs to you and your team. I'm just showing you the tool exists so you can walk into your next appointment and ask about it like the informed menace you're becoming.
And if this one's not for you? Or not for you YET? Totally fine. Zero guilt. The after-dinner ten is the whole win. This is the optional bonus level. Nobody needs the bonus level to beat the game.
Quick personal sidebar before the challenge, because the research this year got weirdly specific to my life. A small 2026 study in Diabetologia had people with type 1 do the same lifting workout six times. Three fasted, in the morning. Three fed, in the afternoon. And the fasted morning sessions weren't safer, people. They were more PREDICTABLE. Steadier response, less spread. Which explains so much, because I run at 4am, fasted, and I always told myself that was discipline. Turns out I'm not disciplined. I'm just predictable. My blood sugar likes a rerun. Twelve people, one lab, small study, but I have never felt so seen by a sample size.
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Your challenge this week: keep the anchor. After-dinner ten, most nights. That's the assignment and it doesn't change. If, and only if, you're steady, prepared, and cleared, you can experiment with one gentle pre-meal movement snack and just watch what happens. You're running a little experiment on yourself, that's all. Nobody needs you to be a hero about it.
Newsletter and tracker at yourbestt1dyear.com. About 2,000 people, one very slow Morkie, and now, apparently, a graduate program.
You're not doing a bad job. You're doing a difficult job, with more tools every single week.
We are the ones. My name is Neil. Monday, a guest walks us into October. See you then.
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.
