DO HARD THINGS

The Combat Fitness Blog

Interference Effect: When Cardio Kills Strength Gains

Combat Fitness

Published on: 30/03/2026

The interference effect cuts strength gains 30–40% when cardio volume is high. Learn when it kicks in and how to program around it.

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How to Maintain Strength While Training for Endurance

Combat Fitness

Published on: 22/01/2026

Worried endurance training will erase your strength? How to maintain strength while training for endurance—minimum dosing, smart sequencing, real recovery.

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Can Conditioning Replace Strength Training? Straight Answer

Combat Fitness

Published on: 22/01/2026

Can conditioning replace strength training? No - here's the interference effect, what each one builds, and how to program both without losing strength.

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Strength Training & Endurance: How Much Is Too Much?

Combat Fitness

Published on: 22/01/2026

Does strength training hurt endurance? Mostly no - 2–3 sessions a week improves running economy and durability. See how much is too much, and when.

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