The Running Channel Podcast 132: The Truth About Caffeine: Performance, Dosage & Timing
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Aug 9, 2025 Nutritionist Siân Seccombe, a content creator passionate about the science behind food and performance, joins the discussion to unravel the world of caffeine. They delve into optimal caffeine dosages for runners, exploring how timing can enhance performance and its varying effects on individuals. Siân shares insights on the cultural dichotomy of coffee consumption, revealing how different countries approach this energizing beverage. Listeners will discover how caffeine can impact digestion, hormonal responses, and overall athletic potential!
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Diet Coke Triggered A Lasting Aversion
- Sarah Hartley drank a bottle of Diet Coke at university and became so shaky she nearly left the lecture.
- That experience put her off caffeine for years and made her cautious about trying it again.
Caffeine Tricks Your Brain
- Caffeine blocks specific brain receptors so you feel less sleepy.
- Sian Seccombe explains it doesn't add energy but 'tricks' the brain into alertness.
Small Percent Gains Matter
- Caffeine yields roughly 2–4% performance gains for endurance athletes.
- Sian Seccombe notes that small percentage gains can be as meaningful as equipment like super shoes.
