How to Reach Your Fitness Goals (Hard-to-Grow Muscles, Lose Fat, Busy Schedule & More) | Dan Garner
In this episode, my guest is Dan Garner, a renowned human performance coach behind UFC champions, Olympic medalists, and CEOs.
We discuss how he bridges the gap between sports science and real-world coaching. Dan explains constraint theory—finding the single bottleneck holding someone back—and walks through the blood markers he uses to find it, including why a 20% testosterone swing can be pure noise, why vitamin D has no usable reference change value, and why the omega-3 index is the most honest marker he tracks. We cover his three-step approach to fat loss, diet breaks, low energy availability, hypertrophy clusters, deload strategy, and an evidence-first framework for evaluating peptides. This episode is for anyone who wants to measure what they're doing and adjust it intelligently rather than guessing.
Show notes
Scientific Articles
- Analytical Performance Specifications for 25-Hydroxyvitamin D Examinations (Nutrients)
- The Omega-3 Index in National Collegiate Athletic Association Division I Collegiate Football Athletes (Journal of Athletic Training)
- Dietary and Biological Assessment of the Omega-3 Status of Collegiate Athletes (PLOS One)
- The Omega-3 Index: a new risk factor for death from coronary heart disease? (Preventive Medicine)
- Low serum 25-hydroxyvitamin D status in the pathogenesis of stress fractures in military personnel (PLOS One)
- Vitamin D Deficiency in the Military: It’s Time to Act! (Military Medicine)
- A critical evaluation of simple methods for the estimation of free testosterone in serum (JCEM)
- Screening for Low Energy Availability in Male Athletes: Attempted Validation of LEAM-Q (Nutrients)
- The LEAF-Q
- Examining the Effects of Herbs on Testosterone Concentrations in Men: A Systematic Review (Advances in Nutrition)
- The sleep-promoting and hypothermic effects of glycine are mediated by NMDA receptors in the suprachiasmatic nucleus (Neuropsychopharmacology)
- New Therapeutic Strategy for Amino Acid Medicine: Glycine Improves the Quality of Sleep (Journal of Pharmacological Sciences)
- Effects of Capsaicin and Capsiate on Endurance Performance: A Meta-Analysis (Nutrients)
- Cluster sets and traditional sets elicit similar muscular hypertrophy (European Journal of Applied Physiology)
- A phase 2/3 randomized clinical trial of elamipretide in Barth syndrome (TAZPOWER) (Genetics in Medicine)
- The Mitochondrial-Derived Peptide MOTS-c Promotes Metabolic Homeostasis and Reduces Obesity and Insulin Resistance (Cell Metabolism)
- Triple hormone receptor agonist retatrutide for metabolic dysfunction-associated steatotic liver disease (Nature Medicine)
Perform Episodes Mentioned
People Mentioned
- Ronda Rousey: Olympic judo medalist and former UFC champion, whose post-pregnancy return and Netflix fight camp Dan coached
- Gina Carano: women’s MMA pioneer
- Sean O’Malley: former UFC bantamweight champion; Dan’s client of seven years and 14 fights
- Dr. Ben House: nutritional sciences PhD
- Dr. Bret Contreras: glute training researcher, previously a guest on Perform
- David Senra: host of the Founders and David Senra podcasts
- Etienne Cavalier: clinical chemist
- Bill Bowerman: University of Oregon track coach and Nike co-founder


