TrollRunner Fitness
Learn
Short, evidence-informed guides — not a substitute for personalized medical or coaching advice, just the fundamentals worth knowing.
Running Form Basics
The handful of form cues that actually move the needle — and the ones that don't.
TrainingHeart Rate Zones & VO2 Max
What the zones actually mean, and why most of your running should feel embarrassingly easy.
RacingMarathon Training Basics
How a training block is actually structured, and why the long run isn't the only thing that matters.
RecoveryRecovery & Sleep
Why recovery is where the actual fitness gains happen — and what wrecks it.
StrengthStrength Training for Runners
Why lifting makes you a better runner, not just a stronger one.
RecoveryInjury Prevention
The 10% rule, the most common running injuries, and how to actually avoid them.
NutritionRace-Day Nutrition
What to eat before and during a race, by distance — and why race day is the wrong time to experiment.
RacingMental Performance
Pacing discipline, self-talk, and the mental skills that separate good races from bad ones.