DO HARD THINGS

The Combat Fitness Blog

Aerobic Capacity for Military Selection: Build the Engine

Aerobic Capacity for Military Selection: Build the Engine

Aerobic Capacity for Military Selection: Build the EngineCombat Fitness
Published on: 26/01/2026

Aerobic capacity for military selection decides who lasts to the final cut. Learn how to build the aerobic base, train it under load, and avoid burnout.

Military Fitness
How Long to Build Aerobic Capacity? Full Timeline

How Long to Build Aerobic Capacity? Full Timeline

How Long to Build Aerobic Capacity? Full TimelineCombat Fitness
Published on: 22/01/2026

How long does it take to build aerobic capacity? Expect first gains in 4–8 weeks, deeper adaptation by 16, and a true aerobic base in 6–12 months. Full breakdown.

Military Fitness
Aerobic Capacity vs Work Capacity: What to Train First

Aerobic Capacity vs Work Capacity: What to Train First

Aerobic Capacity vs Work Capacity: What to Train FirstCombat Fitness
Published on: 22/01/2026

Aerobic capacity vs work capacity, explained for tactical athletes: how each drives performance under load, why both matter, and which to train first.

Military Fitness
How VO2 Max Responds to Endurance Training (5–15% Gains)

How VO2 Max Responds to Endurance Training (5–15% Gains)

How VO2 Max Responds to Endurance Training (5–15% Gains)Combat Fitness
Published on: 22/01/2026

VO2 max responds to endurance training fast—untrained athletes often gain 5–15% in 8 weeks. See the heart and muscle adaptations and how to train for it.

Military Fitness