The Formula

Dr Dan Plews sits down with Dr Alan McCubbin - sports nutrition researcher and one of the most credible voices on sodium and hydration in endurance sport - to separate the science from the marketing. They cover what sodium actually does in the body, why fluid balance matters more than sodium dose alone, and where supplementation genuinely makes a difference.10 key takeaways for athletesSodium's primary job is signalling to your brain whether to drink more, retain fluid, or excrete water - not hydrating you directly.Changing your diet for three days shifts sweat sodium concentration by around 10 to 12 percent. Real but modest.True sodium deficiency from sweat losses is extremely unlikely in modern diets. Most problems come from fluid imbalance not sodium depletion.Your kidneys adapt fast. Athletes who lost 5,500mg of sodium over five hours cut their urinary sodium excretion by two thirds in the 24 hours after -- without supplementing.The 1,000mg morning sodium trend is a hydration retention play. It works when drinking large volumes on an empty stomach. Once food is involved the effect largely disappears.Pre-exercise hyperhydration is the clearest use case for sodium -- most relevant for hot, high intensity events where fluid access is limited during competition.Sodium during exercise doesn't directly improve performance. If it helps you drink enough fluid to stay hydrated, performance may improve as a result.Hyponatremia is a fluid problem not a sodium problem. Overdrinking is the risk. Sodium cannot rescue clear overhydration.Sweat sodium testing has limited value if your event is under four hours. General guidelines are enough for most athletes.Sodium matters but context matters more. Event duration, heat, and drinking behaviour should drive your hydration strategy -- not chasing a specific number every session.00:00 - Why Dan wanted Alan on to talk sodium03:34 - The old research on diet and sweat sodium09:10 - What sodium actually does in the body11:32 - How sodium drives thirst and kidney responses22:16 - Five hours of heat running and kidney adaptation26:32 - The rise of the 1,000 milligram morning sodium trend36:44 - Pre-loading fluid for hot, long events47:04 - During-exercise sodium and the real mechanism49:24 - What hyponatremia actually does in the body60:21 - Why recovery and post-exercise hydration is where sodium helps most64:25 - Whether sweat sodium testing is worth it for most athletes69:21 - Where Pillar's 400 milligram hydration product fitsConnect:Dr Alan McCubbin: https://www.instagram.com/fuelingendurance/Dr. Dan Plews: instagram.com/theplewsShop: pillarperformance.shopInstagram: instagram.com/pillarperformanceStrava: strava.com/clubs/1108245

The Formula by PILLAR Performance - Paul BoothPhD nutritionist Paul Booth - the coach behind both 2025 UTMB winners - sits down with Dr. Dan Plews to challenge some of the most widely accepted conventions in endurance nutrition. Why the push toward 120g of carbohydrate per hour is getting ahead of the evidence. Why your gut, not your fitness, is often the deciding factor on race day. And how elite ultra runners are actually fuelling in competition.Timestamps:00:00 - Introduction to carbohydrate fuelling debates in endurance sports00:13 - Paul's balanced approach: science-driven carbohydrate recommendations00:43 - Variability among athletes: from 70 to 110 grams per hour02:25 - Paul's background: from film industry to elite sports nutrition09:28 - Elite athletes like Tom Evans: metabolic characteristics and genetic advantages13:02 - The process of working with elite athletes: brief, data analysis, lab testing15:04 - Nutritional strategies: setting carbohydrate and fuelling goals18:56 - Cycling carbohydrate intake to match terrain and effort22:38 - Real-world studies on carbohydrate intake: from 70 to 120 grams per hour28:56 - Lab testing on Tom Evans' carbohydrate metabolism32:48 - The role of carbohydrate loading: optimal duration and timing41:28 - The aim of Paul's PhD: understanding ultra runner metabolism48:14 - The effect of carbohydrate ratios on absorption and performance52:18 - Study results: GI issues linked to higher carbohydrate doses60:47 - How dual carbohydrate strategies improve oxidation and reduce gut issues63:08 - Debunking outdated myths: the inefficacy of 2:1 carbohydrate ratios75:02 - Risks of over or under fuelling during races80:30 - Case study: an elite runner's nutritional strategy and race success83:01 - Final thoughts: science-guided, adaptable fuelling strategiesConnect:Paul Booth: instagram.com/ultra.endurance.nutritionistDr. Dan Plews: instagram.com/theplewsShop: pillarperformance.shopInstagram: instagram.com/pillarperformanceStrava: strava.com/clubs/1108245

Discover the secrets behind elite endurance performance, aging muscle health, and innovative training strategies shared by renowned Surf Ironman champion Alastair Day and sports scientists. This episode explores practical tips for optimising training, nutrition, inflammation management, and longevity in sport.In this episode:Ali's transition from peak competitive Ironman racing to retirement and maintaining a healthy lifestyleKey nutritional strategies for endurance athletes, including carbohydrate loading and fuelling during multi-hour racesThe science of mitochondrial health, aging, and how consistent aerobic exercise can reverse mitochondrial declineCombining altitude and heat training for enhanced hematological benefitsManaging inflammation and injury with natural anti-inflammatory supplementsPractical advice for young athletes: small habits that lead to consistent, long-term successThe impact of mitochondrial plasticity on performance and agingInsights into how different training environments and nutrition can extend athletic longevityTimestamps: 00:00 - Introduction to Ali's illustrious career and ongoing contributions02:29 - Ali shares first impressions of retirement and current training routine04:12 - The science behind carbohydrate fueling and recent research shifts06:43 - The implications of high-carb intake for recovery versus performance08:43 - Nutrition strategies in surf Ironman racing: personal experiences and adaptations11:02 - The debate over keto versus high-carb diets for endurance athletes13:02 - How body size and session intensity influence carbohydrate needs15:07 - Typical race durations and fueling strategies in Ironman and series racing16:54 - The evolution of nutritional flexibility and race-day adaptability20:22 - The role of mitochondrial health in aging and endurance capacity22:55 - How aging affects mitochondrial efficiency and physical performance25:20 - Peak physical capacity in aging athletes and mitochondrial plasticity27:27 - The importance of early aerobic base development during puberty28:37 - The concept of mitochondrial plasticity and response to environmental stressors31:43 - Study insights on heat and altitude training benefits for endurance athletes35:27 - Practical applications: layering during altitude training and cost considerations39:19 - Inflammation management, injury prevention, and natural supplement strategies44:43 - Natural anti-inflammatory compounds: Kirkman and curcumin advances50:41 - The importance of small, controllable habits for athletic longevity55:08 - Integrating nutrition and recovery strategies for long-term health57:25 - Final thoughts on investments in athlete health and future trendsAli Day: https://www.instagram.com/alastairday/Dr Dan Plews: https://www.instagram.com/theplews/PILLAR:⁠ ⁠https://www.instagram.com/pillarperformance/Shop online:⁠ ⁠https://pillarperformance.com

In this episode, Rachel Arthur demystifies the complex role of iron in the body, emphasizing its importance for athletes and the general population alike. Whether you're curious about testing, supplementation, or understanding your blood markers, this conversation offers practical insights grounded in science.Key Topics Covered:The critical functions of iron in oxygen transport, energy production, and immunityWho is at risk of iron deficiency, including athletes, women, and childrenThe unique challenges in iron testing: timing, fasting, and interpreting blood markersThe nuanced roles of transferrin, transferrin saturation, and ferritin in assessing iron statusGenetic factors influencing iron absorption, such as hereditary hyperabsorptionPractical strategies for iron supplementation, including diet and supplement timingThe potential pitfalls of iron overload and the importance of personalized testingThe fascinating and somewhat mysterious process of ferritin regulation and releaseRecommendations for routine blood testing and interpreting results accuratelyTimestamps:(00:00) - Introduction to Rachel Arthur and her expertise in iron metabolism(02:11) - Why iron is a "minx among minerals" and its multifaceted roles(04:05) - Who is most at risk of iron deficiency: women, children, athletes(05:46) - Common losses of iron during exercise and sweating(07:04) - Understanding exercise-related hemolysis ("foot strike") and its impact(08:39) - Challenges of testing children for iron status and dietary strategies(11:06) - How infants historically met iron needs through breast milk and organ meats(12:38) - How to approach supplementation safely with blood testing(14:11) - The impact of exercise-induced inflammation on iron regulation(17:34) - The role of inflammation, ferritin, and the timing of blood tests(20:33) - How to interpret transferrin, saturation, and ferritin levels(22:30) - Ferritin as an inflammation marker and its complex regulation(27:00) - The detailed process of iron transport and storage in the body(33:21) - The importance of individual interpretation of iron markers(40:00) - Genetic factors influencing iron absorption ("hyperabsorber" genes)(44:48) - Why ferritin in blood may not reflect actual iron stores(50:03) - Setting blood test benchmarks and understanding normative values(53:34) - Strategies for iron supplementation in athletes: diet, timing, and doses(58:04) - The circadian rhythm of iron uptake and best practices for intake(60:30) - Summary of practical steps for blood testing and iron management(61:43) - The dangers of self-supplementation without testing(62:44) - Resources and where to find more from Rachel Arthur(63:43) - Rachel’s personal supplement routine and ongoing health practicesRachel Arthur: https://rachelarthur.com.au/Dr Dan Plews: https://www.instagram.com/theplews/PILLAR:⁠ ⁠https://www.instagram.com/pillarperformance_/ Shop online:⁠ ⁠https://pillarperformance.shop/⁠⁠ 

Dr. Dan Plews sits down with Brad Beer, founder of POGO Physio, to unpack the real story behind sports injuries and aging athletes. They explore the psychology of injury recovery, how hormonal changes affect tendon health, and why traditional rehab approaches are being reimagined. Brad shares practical insights on strength and conditioning, the role of collagen supplementation, and why maintaining muscle mass matters more than you think. If you're an athlete dealing with lower limb issues or simply want to stay healthy as you age, this conversation will change how you approach performance and recovery.Key Takeaways:Why understanding athlete psychology is crucial for effective treatmentThe vital role of strength and conditioning in injury preventionHow hormonal changes impact tendon health as you ageBenefits of collagen supplementation for tendon recoveryThe importance of tailored rehabilitation for optimal outcomesHow strength training improves running performanceWhy maintaining muscle mass matters for aging athletesChapters00:00:00 Introduction and Background00:03:00 Understanding Athlete Psychology00:09:00 Strength and Conditioning00:15:00 Hormonal Impact on Tendon Health00:21:00 Collagen Supplementation Benefits00:27:00 Maintaining Muscle Mass00:33:00 Evolving Sports Physio PracticesDr Dan Plews: https://www.instagram.com/theplews/PILLAR:⁠ ⁠https://www.instagram.com/pillarperformance_/ Shop online:⁠ ⁠https://pillarperformance.shop/⁠⁠