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You’re Not Broken — You’re Untrained for the Second Half of Your Life

You’re Not Broken — You’re Untrained for the Second Half of Your LifeBy: Dr. Andreas Boettcher Published on: 19/01/2026

You’re not broken — you’re untrained for the second half of life. Discover how discipline, brotherhood, and modern lab science help men rebuild strength, energy, and confidence from the inside out.

FitnessMotivation
You’re Not Broken — You’re Untrained for the Second Half of Your Life

Why Calorie Counting Fails—and How TDEE Creates a Precision Fat-Loss Blueprint

Why Calorie Counting Fails—and How TDEE Creates a Precision Fat-Loss BlueprintBy: Dr. Andreas Boettcher Published on: 16/01/2026

Learn what TDEE really is, why calorie counting fails, and how training-day vs fasting-day nutrition creates precision fat loss without hormonal damage.

NutritionFitness
Why Calorie Counting Fails—and How TDEE Creates a Precision Fat-Loss Blueprint

HRV and Testosterone: The Hidden Hormone Signal Men Over 40 Must Track to Reclaim Performance and Vitality

HRV and Testosterone: The Hidden Hormone Signal Men Over 40 Must Track to Reclaim Performance and VitalityBy: Dr. Andreas Boettcher Published on: 15/01/2026

Heart rate variability is the key biomarker men over 40 must track. Discover how HRV predicts testosterone, metabolic health, and performance — without drugs or TRT.

HormonesNutritionFitnessCase Study
HRV and Testosterone: The Hidden Hormone Signal Men Over 40 Must Track to Reclaim Performance and Vitality

Body Fat Calculator

Body Fat CalculatorBy: Dr. Andreas Boettcher Published on: 09/01/2026

Most men obsess over the number on the scale and miss the metric that actually matters: body composition. In this post, we break down why tracking body fat—not just weight—is essential for performance, longevity, and hormone health, and show you how to use the IOH Body Fat Calculator to measure, monitor, and improve your results over time.

Fitness
Body Fat Calculator

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