Heart Rate
5 articles
TrainingSeptember 28, 2026 · 10 MIN
Zone 2 Treadmill vs Outdoor Running: The Complete Equivalence Guide
Zone-2 treadmill training does not directly translate to outdoor running. Heart rate runs 5-10 bpm lower indoors, pace conversions differ by 10-20 sec/km, and the popular 1% incline rule only applies above 4:30/km. Here is how to calibrate both modalities for accurate aerobic development.
TrainingSeptember 16, 2026 · 11 MIN
Zone 2 Training for Triathletes: Building the Three-Sport Aerobic Engine
Zone 2 training is the foundation of triathlon performance, but applying it across swim, bike, and run requires sport-specific heart rate adjustments, volume distribution, and fat oxidation optimization. A properly structured Z2 block of 70–80% total volume builds the aerobic engine that powers race-day performance across all three disciplines.
TrainingSeptember 14, 2026 · 9 MIN
Zone 2 Heart Rate Drift: What It Tells You About Aerobic Fitness
Heart rate drift during steady-state Zone 2 training is one of the simplest and most reliable indicators of aerobic fitness. A drift below 5% signals an excellent aerobic base, while drift above 10% indicates significant room for improvement — and the test costs nothing but 60 minutes of disciplined pacing.
TrainingJune 11, 2026 · 7 MIN
Heart Rate Zones for Running: How to Find Yours and Use Them
Running by heart rate removes the guesswork from training intensity. Here's how to calculate your zones, what each one develops, and why most runners spend too much time in the wrong zone.
TrainingApril 14, 2026 · 9 MIN
Zone 2 Training: The Complete Guide for Endurance Athletes
Zone 2 is the foundation of elite endurance training — but most amateur athletes spend too little time here. Here's how to train it correctly and why it works.