EPISODE · Feb 14, 2026 · 13 MIN
How Athletic Performance Really Works: Dr. Berg's Science-Based Approach
from Fuel Different · host Sarah Williams
Think your genetics determine how fast you run or how strong you get? Dr. Berg just shattered that myth completely. In this episode, Sarah Williams sits down with one of sports medicine's most respected voices to break down what actually drives athletic performance - and it's not what you think. On Fuel Different, we dig into the shocking truth about energy systems that most athletes get totally wrong. Dr. Berg reveals how your body can tap into 40,000+ calories of stored fat while most people obsess over the measly 1,500-2,000 calories from glycogen. You'll discover why 70% of athletes are magnesium deficient despite "normal" blood tests, how insulin resistance can hit trained athletes in just 3 days of poor nutrition choices, and why your cortisol might stay jacked for 48 hours after tough workouts. This isn't theory - it's practical science you can use today. 📍 Chapters: [00:00] Introduction with Sarah Williams [01:30] The energy system myth that's killing performance [04:00] Why blood tests lie about nutrient deficiencies [07:00] The 3-day insulin resistance trap for athletes [10:00] Cortisol recovery secrets most coaches ignore [12:00] Action steps for immediate performance gains 🔍 Topics: wellness, fitness, nutrition, mental health, longevity, medicine, doctors, diet ⭐ Love what you're hearing on Fuel Different? Drop us a 5-star review and let us know what hit home for you. Follow the show so you catch every episode - we're dropping fresh content daily with experts who actually know what they're talking about. See you tomorrow! ------------ Keywords: health education, health research, nutrition facts, functional medicine, liver health, diet advice, hormone health Learn more about your ad choices. Visit megaphone.fm/adchoices
What this episode covers
Think your genetics determine how fast you run or how strong you get? Dr. Berg just shattered that myth completely. In this episode, Sarah Williams sits down with one of sports medicine's most respected voices to break down what actually drives athletic performance - and it's not what you think. On Fuel Different, we dig into the shocking truth about energy systems that most athletes get totally wrong. Dr. Berg reveals how your body can tap into 40,000+ calories of stored fat while most people obsess over the measly 1,500-2,000 calories from glycogen. You'll discover why 70% of athletes are magnesium deficient despite "normal" blood tests, how insulin resistance can hit trained athletes in just 3 days of poor nutrition choices, and why your cortisol might stay jacked for 48 hours after tough workouts. This isn't theory - it's practical science you can use today. 📍 Chapters: [00:00] Introduction with Sarah Williams [01:30] The energy system myth that's killing performance [04:00] Why blood tests lie about nutrient deficiencies [07:00] The 3-day insulin resistance trap for athletes [10:00] Cortisol recovery secrets most coaches ignore [12:00] Action steps for immediate performance gains 🔍 Topics: wellness, fitness, nutrition, mental health, longevity, medicine, doctors, diet ⭐ Love what you're hearing on Fuel Different? Drop us a 5-star review and let us know what hit home for you. Follow the show so you catch every episode - we're dropping fresh content daily with experts who actually know what they're talking about. See you tomorrow! ------------ Keywords: health education, health research, nutrition facts, functional medicine, liver health, diet advice, hormone health Learn more about your ad choices. Visit megaphone.fm/adchoices
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How Athletic Performance Really Works: Dr. Berg's Science-Based Approach
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