Inside the Method by Heidi Greenwood
Fueling the Long Game: Why Endurance Athletes Need More — Not Less — with Alex Larson, RD SHOW NOTES What if the biggest thing holding endurance athletes back isn’t training harder — but fueling better? In this episode of Inside the Method, Heidi sits down with Alex Larson, a registered dietitian specializing in sports nutrition for endurance athletes, to unpack one of the most common — and most misunderstood — issues in the endurance world: chronic under-fueling. Together, they explore how a culture of restriction, fear of carbohydrates, and “less is more” fueling myths quietly erode performance, recovery, hormones, and long-term health — especially for athletes who menstruate. Alex shares her journey from clinical nutrition into sports performance, what she sees most often in triathletes and endurance athletes, and why today’s research is finally catching up to what many athletes have felt in their bodies for years. This conversation reframes fueling as protection, performance, and longevity — not something to earn or restrict — and offers clarity on supplements, recovery nutrition, and the future of female athlete research. Whether you’re an endurance athlete, a weekend warrior, or simply someone trying to fuel your body with intention, this episode offers a powerful mindset shift: you don’t get stronger by eating less — you get stronger by fueling enough. KEY MOMENTS 02:10 – Meet Alex Larson: From Clinical Nutrition to Endurance Sports 06:45 – Why Under-Fueling Is So Common in Triathletes 10:30 – The Cultural Myth of “Fasted Training” and Performance 15:05 – Signs You’re Not Fueling Enough (Even If You Think You Are) 19:40 – Chronic Fatigue, Hunger, Injuries & Hormonal Disruption 24:50 – Carbohydrates: Why Recommendations Have Changed 30:15 – Heidi’s Personal Experience with Under-Fueling & Recovery 35:40 – Fueling as Muscle Protection, Not Weight Control 40:20 – Protein Powders: Whey vs. Plant-Based for Endurance Athletes 45:10 – Creatine, Sodium Bicarbonate & What’s Worth the Hype 51:30 – Supplements to Be Cautious With 56:10 – The Future of Sports Nutrition Research & Female Athlete Bone Health WHAT YOU’LL LEARN * Why under-fueling often masquerades as “discipline” or “optimization” * How inconsistent fueling impacts hormones, metabolism, and recovery * Why athletes fear weight gain — and how that fear backfires * The importance of balanced carbs throughout the day, not just around workouts * How proper fueling improves training adaptations and race-day performance * Which supplements are evidence-based — and which are mostly marketing * Why female athlete nutrition research is entering a critical new era STAY CONNECTED Heidi Greenwood ● Instagram: @hjogreenwood ● Website: HeidiGreenMethod.com SUPPORT THE SHOW If this episode resonated with you, share it with an athlete, coach, or friend who might need to hear it. Leaving a review or sending it to someone in your training circle helps this message reach more people who deserve to feel strong, fueled, and supported. Remember: Fueling isn’t about doing less — it’s about building a body that can do more, for longer.
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