Measurement day, and the idea underneath it might be the most important sentence of the whole challenge: the average response was never the problem, the spread around it is. The newest wave of 2026 research in Diabetologia and Diabetes Technology and Therapeutics is mostly about variability, how differently the same walk lands in different bodies. Which means the most important dataset in the world for your diabetes has a sample size of one: you.

Then the assignment: pull your week-one baseline, take the after picture, and grade it with Neil's rubric instead of your inner gym teacher's. Steps up by any amount is a win. Longest sit down might be the bigger win. Flat totals with better spread still wins. And if life wrecked your September? You're still here in week seven. That counts.

In this episode:

• Why exercise variability is the new frontier of T1D research
• The sample-size-of-one idea that justifies the whole beat-yesterday approach
• The four-outcome grading rubric that turns every honest result into information
• How to take your after picture in five minutes tonight

Your challenge: take the after picture, grade it with the rubric, and send it in for the finale wall.

Helpful resources and newsletter: https://yourbestt1dyear.com

Connect with Neil: TikTok: https://tiktok.com/@the.betes Instagram: https://instagram.com/thebetes Facebook: https://facebook.com/neilgreathouse LinkedIn: https://linkedin.com/in/neil-greathouse-a607b912 Website: https://yourbestt1dyear.com

Books on Amazon: Type 1 Diabetes – One Day at a Time: https://a.co/d/6UHooWJ Type 1 Diabetes – True Stories: https://a.co/d/dfIlyI1