The Glucose Never Lies® Podcast
Host John Pemberton — diabetes educator, researcher, and dad living with type 1 since 2008 — explores how to think clearly about type 1 diabetes in the real world.
EACH episode translates current evidence and expert practice into decisions you can use: CGM accuracy and interpretation, getting more from pumps and automated insulin delivery, movement as a glucose tool, nutrition that protects performance and enjoyment, sleep, travel, parties, and sport.
Guests include leading clinicians, researchers, and people with lived experience. Expect respectful challenge, plain language, and practical take-aways.
Note: Educational only. No therapeutic relationship or personal medical advice.
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The Glucose Never Lies® Podcast
Episode 18 — Physical Activity vs Exercise: the Before–During–After Playbook with Prof. Othmar Moser
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What’s the difference between physical activity and exercise when you live with type 1 diabetes? And why does it matter?
Full show notes & transcript: Episode 18 page
In this episode, I’m joined by Prof. Othmar Moser, exercise physiologist, guideline author, and fellow person with type 1, to break down:
- Why 10 minutes of activity after meals is the easiest, most powerful place to start.
- The 20/20 and 40/40 rules — how 20 minutes of light movement can drop glucose by 20–40 mg/dL (1–2 mmol/L).
- How CGM feedback makes activity tangible and motivating.
- The Before–During–After playbook for structured exercise:
• Before: meal timing, prandial reductions, AID temp targets, basal adjustments.
• During: safe glucose range, 3–20 g carb top-ups, when to fingerstick.
• After: the first hour of hypo risk, late-night dips, protein strategy, and therapy-specific caveats (AID vs Pump vs MDI).
Full show notes & transcript: Episode 10 page
Explore the FAQ resource with all the key questions and diagrams: FAQ — T1D Exercise & Activity
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About The Glucose Never Lies® Podcast
This podcast translates the latest diabetes science into practical, real-world steps. Honest conversations with the world’s leading researchers, mixed with the lived experience of people with type 1 diabetes.
Disclaimer:
This podcast is for informational purposes only and does not replace medical advice. Always consult your healthcare professional before changing therapy.
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