Latest videos
Why Eating Less Can Stall Fat Loss and Cost You Muscle
Eating less does not always mean losing more fat. If you are cutting hard, training hard, or stuck in a cycle of low energy, this conversation breaks down why chronic underfueling can quietly affect recovery, hormones, immune function, and even body composition. Coach Aaron Feld and Dr. Cody Haun explore bioenergy availability—what it is, how to calculate it, and why your body has a limit to how much fat it can mobilize before it starts tapping into muscle and other fat-free mass. They also unpack the signs that you may be underfueling before your performance falls apart. In this episode, you’ll discover: Why a severe calorie deficit can backfire on fat loss How low energy availability can affect mood, recovery, heart rate variability, and blood markers The role of IGF-1, thyroid hormones, testosterone, and sex hormone-binding globulin in adaptation Why protein intake and resistance training can dramatically change the type of weight you lose How the thermic effect of feeding works Why protein can provide more metabolic leverage than many people realize How to lose body fat without sacrificing the muscle you have built Dr. Haun also explains the rate-limiting nature of fat loss, including the often-misunderstood idea that your body can only safely mobilize so much body fat per day before it has to look elsewhere for energy. If you have ever wondered why “just eat less” can lead to lower energy, weaker workouts, and disappointing results, this episode offers the missing nuance. It’s essential listening for anyone cutting weight, coaching clients, or trying to improve body composition without losing muscle. For more information, visit fitomics.com or fitomics.com/interest. Fitomics Resources: Instagram: • https://www.instagram.com/fitomicshq • https://www.instagram.com/drcodyhaun • https://www.instagram.com/coachfeld Facebook: https://www.facebook.com/fitomics Website: https://fitomics.com Research Labs Insider: https://fitomicslabs.com Supplement Shop: https://us.fullscript.com/s/fitomics/shop #MuscleGrowth #Hypertrophy #StrengthTraining #ExerciseScience #FitnessPodcast
The Real Hypertrophy Secret: Why Effort Matters More Than Rep Range
Muscle growth is not mainly about finding the perfect rep range—it’s about getting close enough to failure, with the right technique, at the right dose. In this episode of the Fitomics Podcast, Coach Aaron Feld sits down with Dr. Cody Haun, PhD physiologist and CEO, for an unplanned deep dive into muscle hypertrophy, training intensity, and why the same workout can produce completely different results for different people. They begin with one of the most common questions in strength training: What rep range should you use to build muscle? From there, they explore why proximity to failure may matter more than chasing a “magic” rep range, how technical failure differs from total mechanical failure, and why most lifters underestimate how many reps they actually have left. The conversation also explores why understanding physiology matters for coaches and clients. You may know what to do without knowing why it works—but when your progress stalls, understanding the “why” can help identify the right lever to pull. If you’ve ever thought, “I’ve tried everything and nothing works,” this episode offers a different perspective: the solution may not be adding more to your routine. It may be removing what is getting in your way. For more information, visit fitomics.com or fitomics.com/interest. Fitomics Resources: Instagram: • https://instagram.com/fitomicshq • https://www.instagram.com/drcodyhaun/ • https://www.instagram.com/coachfeld/ Facebook: https://facebook.com/fitomics Website: https://fitomics.com Research Labs Insider: https://fitomicslabs.com Supplement Shop: https://us.fullscript.com/welcome/fitomics/ #MuscleGrowth #Hypertrophy #StrengthTraining #ExerciseScience #FitnessPodcast
Understanding Energy Availability in Sports Nutrition #fitnessscience #endurancetraining
Are you fueling enough for your training? Energy availability plays a major role in performance, recovery, and overall health. Learn why getting enough energy to support both exercise and everyday body functions matters. @dr.codyhaun #SportsNutrition #PerformanceNutrition #AthleteHealth #Fitomics #YouTubeShorts
Protein & Resistance Training for Fat Loss #endurancetraining #fitnessscience #metabolichealth
Fat loss goal? Don't just eat less - give your muscles a reason to stay. A deficit is a catabolic signal — your body doesn't know you only want to lose fat. In a 4-week trial at a ~40% deficit with training 6 days a week, men eating 2.4 g/kg/day of protein gained 1.2 kg of lean mass and lost 4.8 kg of fat. At 1.2 g/kg/day: 0.1 kg lean, 3.5 kg fat. Same targeted deficit, same training. The deficit drives fat loss. Protein + resistance training influence how much of the loss is muscle. Longland et al., Am J Clin Nutr 2016 — doi.org/10.3945/ajcn.115.119339 Website: https://www.fitomics.com/ #Fitomics #FatLoss #Protein #ResistanceTraining #StrengthTraining #BodyComposition #MuscleHealth #FitnessScience #Shorts
Boost Energy: Improve VO2 Max & Fat Oxidation #fitness #healthtips #vo2max
Most people get fat-loss cardio backwards. The real answer isn’t simply “go harder” or “stay in the fat-burning zone”—it’s understanding how your body uses oxygen, fat, and glucose at different intensities.Dr. Cody Haun and Coach Aaron Feld break down the science behind VO2 max, fat max, and why the most effective training zone differs from person to person. If you’ve ever wondered why Zone 2 is so popular, why higher intensity can still burn more fat overall, or why you feel exhausted even when you’re “doing everything right,” this conversation connects the dots. You’ll learn: • Why the percentage of fat burned isn’t the same as the total amount of fat burned • How VO2 max testing reveals what your body is doing during exercise • Where fat max often occurs—and why it can change as you train • How Zone 2 supports recovery, endurance, and metabolic efficiency • Why improving aerobic capacity can make everyday activities feel easier • How better fat oxidation may help preserve glucose for higher-demand work The conversation also explores the relationship between aerobic conditioning, energy availability, recovery, and performance—from hard training sessions to mental focus and daily life.If you want a smarter way to train, improve your energy, burn fat, and build endurance, this episode offers a practical, science-informed roadmap. Fitomics Resources: Instagram: • https://instagram.com/fitomicshq • https://www.instagram.com/drcodyhaun/ • https://www.instagram.com/coachfeld/ Facebook: https://facebook.com/fitomics Website: https://fitomics.com Research Labs Insider: https://fitomicslabs.com #VO2Max #Zone2Training #FatOxidation #CardioTraining #MetabolicHealth
There are options when hormone therapy isn’t right for you #fitnessscience #metabolichealth
There are options when hormone therapy isn’t right for you: 💪Exercise: both cardio and strength training 😴Sleep management: CBT, sleep hygiene, supplements, or RX 🥦Nutrition: anti-inflammatory focus with sufficient protein and healthy fats 🌱Supplements and prescriptions: for mental health, weight loss, thyroid health, cholesterol and blood sugar management, bone density, libido, skin health, hair loss www.fitomics.com #equipandempower #fitomics #menopause #perimenopause
Why Your Biceps Workout Isn’t Working #endurancetraining #fitnessscience #metabolichealth
Putting in the work but not seeing biceps growth? In this episode, we break down common training mistakes that may be keeping your results stuck and what to focus on instead. Subscribe for practical, science-informed conversations on training, performance, and health. www.fitomics.com #Fitomics #BicepsWorkout #StrengthTraining #FitnessTips
Improving Low Intensity Activity: 2 Approaches #endurancetraining #fitnessscience #metabolichealth
Low-intensity activity can make a meaningful difference in how you feel, recover, and build consistency. Try these two simple approaches to make everyday movement work harder for you. Follow Fitomics for practical fitness, nutrition, and health insights. https://www.fitomics.com/ @dr.codyhaun #Fitomics #LowIntensityActivity #FitnessTips #HealthyHabits #Shorts
Boost Fat Oxidation & Save Carbs #endurancetraining #fatoxidation #fitnessscience
Your body has more than one fuel source. The goal is to train it to use them strategically. 🔥 Improving your aerobic conditioning can help your body rely more efficiently on fat for energy, preserve carbohydrates for higher-intensity efforts, and delay fatigue. At Fitomics, we measure what your body is actually doing so you can train with purpose, not guesswork. Ready to understand your metabolism? Book your assessment at Fitomics.com. #MetabolicTesting #FatOxidation #EnduranceTraining #TrainSmarter #VO2Max