muscle

High-intensity interval training boosts muscle mitochondria, study shows

by Nana Olejank Hansen, University of Southern Denmark edited by Gaby Clark, reviewed by Robert Egan  Editors’ notes  The GIST Add as preferred source Schematic overview of participants and the 8-week HIIT protocol. Credit: Diabetologia (2026). DOI: 10.1007/s00125-026-06694-6 Researchers from the University of Southern Denmark investigated how eight weeks of high-intensity interval training affect the structure of mitochondria—the parts of […]

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How low can you go (and still build muscle)? Why strength training matters at any age

by Tom Janssen, Matthew Lees, The Conversation edited by Lisa Lock, reviewed by Andrew Zinin  Editors’ notes Credit: Yan Krukau from Pexels Getting out of a chair shouldn’t be a struggle. Yet for many older adults, simple everyday movements like this become increasingly difficult as our muscles break down and weaken with age, a process called sarcopenia. The consequences

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The Undervalued Medical Power of Muscle

The exponential rise of our aging population. The pandemic. The explosion of GLP-1s. It’s a trifecta that’s making muscle — and the serious implications of not having enough of it — part of a larger health conversation. Yet when I recently asked my 65-year-old mom whether her doctor had ever talked to her about resistance

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