DO HARD THINGS

The Combat Fitness Blog

Training Adaptation: How the Body Changes and Why It Matters

Combat Fitness

Published on: 31/01/2026

The four types of training adaptation, how long each one takes, and why the change happens during recovery rather than during the session.

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Volume vs Intensity: How Muscles Grow and Get Stronger

Combat Fitness

Published on: 22/01/2026

Volume drives muscle growth; intensity builds maximal strength. See how each adaptation works - and why tactical athletes need both to perform under fatigue.

military-fitnesstactical-fitnessstrength-traininghypertrophymuscle-growthtraining-sciencevolume-vs-intensityperiodizationwork-capacity

How Bones Adapt to Impact: Build Stronger Bones

Combat Fitness

Published on: 22/01/2026

How bones adapt to impact: the science of mechanical loading, Wolff's Law, and how rucking, running, and lifting build denser, fracture-resistant bones.

military-fitnesstraining-sciencebone-healthinjury-preventionstress-fracturesruckingrunningrecoverystrength-trainingprogressive-overload

Training Readiness: What the Score Means & What to Do

Combat Fitness

Published on: 22/01/2026

What training readiness actually measures, the five factors that move it, and exactly how to adjust your session on a low-readiness day.

military-fitnesstactical-athletetraining-readinessrecoveryfatiguetraining-loadovertrainingtraining-science