Zinc for Testosterone: What Actually Works (And What's Hype)
That viral claim about zinc boosting T? It's based on a flawed 1996 study. Here's what the real research shows about zin...
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Glutamine for Athletes: The Immune Support Truth I Was Wrong About
I used to dismiss glutamine as overhyped—until I saw the data on athletes and immune function. Here's what changed my mi...
Why I Stopped Recommending Standard Electrolyte Drinks to Marathon Runners
I used to push the same electrolyte protocol to every runner—until sweat testing showed me how wrong I was. Here's how t...
MCT Oil vs. Coconut Oil: The Athlete's Energy Fuel Showdown
Sports nutritionist Rachel Kim breaks down which fat source gives you real sustained energy—with specific dosing, brand...
Pre-Workout Ingredients That Actually Work: A Practitioner's Guide
Stop wasting money on hype. I analyze citrulline, beta-alanine, and betaine with real studies and dosing advice from 12...
Protein for Cross-Country Skiers: Fueling Endurance and Poling Power
Cross-country skiing demands unique protein strategies. Learn how to balance endurance and upper body strength with scie...
Breathwork & Supplements: The Endurance Athlete's Secret Weapon
Stop wasting money on fancy gear. The real performance edge comes from combining specific breathing techniques with targ...
NAD+ Boosters for Masters Athletes: My Clinical Take on Cellular Energy
I was skeptical about NAD+ supplements until I saw the data. Here's what research shows for masters athletes wanting bet...
NAD+ Boosters for Athletes: What Actually Works for Recovery
I used to think NAD+ boosters were overhyped—until I saw the recovery data. Here's what the research shows for athletes,...
PQQ for Mitochondrial Biogenesis: My Reversal on This Cellular Energy Booster
I used to dismiss PQQ as hype—until I saw the mitochondrial biogenesis data. Here's how pyrroloquinoline quinone actuall...
Pyruvate Supplements: The Exercise & Fat Loss Evidence You Need
Dr. Amanda Foster reviews pyruvate research: does it boost workouts, burn fat, or waste money? Get dosing, timing, and w...
Why Most Teen Athletes Don't Need Protein Powder (And When They Do)
Protein supplements for teens: evidence-based safety guidelines, optimal timing, and when to skip the powder entirely. W...