Zone 2
8 articles
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.
RecoverySeptember 11, 2026 · 11 MIN
Zone 2 Recovery Rides: Active Recovery Protocol for Cyclists
Zone 2 recovery rides at 55-65% max HR and 45-55% FTP clear blood lactate 25-40% faster than passive rest and enhance parasympathetic nervous system reactivation. Learn the optimal duration (30-60 minutes), timing after hard sessions, and when to skip the recovery ride entirely.
NutritionSeptember 7, 2026 · 12 MIN
Zone 2 Nutrition: Fueling Low-Intensity Sessions for Fat Adaptation
Zone 2 training builds your aerobic engine, but fueling it wrong can blunt the metabolic adaptations you are chasing. Here is how to periodise nutrition around low-intensity blocks for maximum fat oxidation.
TrainingSeptember 5, 2026 · 12 MIN
Zone 2 Training for Ultra-Running: Building Your Aerobic Engine
Ultra-runners who keep 80%+ of weekly volume in zone 2 improve mitochondrial density by 20-40% and fat oxidation rates by 30%. Here is the complete guide to building your aerobic base for events from 50K to 100 miles.
TrainingAugust 15, 2026 · 9 MIN
Base Building: How to Build Aerobic Endurance Before Speed Work
Skipping the base phase is the most common training mistake in endurance sport. A proper 8–12 week aerobic base — 80% of runs at Zone 2 — builds the mitochondrial engine that makes speed work productive.
TrainingJune 16, 2026 · 8 MIN
Zone 2 Training for Cyclists: The Aerobic Base That Makes Everything Else Work
The most important training zone for cyclists isn't the one that hurts. Zone 2 — boring, conversational, and frustratingly slow — is where metabolic fitness is built. Here's the physiology and the protocol.
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.