Zone 2 Cardio

Zone 2 cardio is low-intensity, aerobic training where you maintain 60-70% of maximum heart rate. It's the foundation of metabolic health and endurance.

Physiology & Adaptations

Maximally stimulates mitochondrial biogenesis and fat oxidation enzymes. Improves lactate clearance and cardiovascular efficiency without stress.

Key Benefits

Maximizes fat oxidation and metabolic flexibility.

Builds mitochondrial density and capillary networks.

Improves cardiovascular efficiency and recovery.

Low stress, sustainable long-term.

Sample Session

Blueprint

60 min bike at 130-145 bpm (Zone 2). Monitor HR every 5 min. If it exceeds 145, reduce wattage/pace immediately.

Common Pitfalls

Going too hard (Zone 3-4), losing aerobic benefits.

Not tracking HR, just guessing intensity.

Skipping Zone 2 in favor of HIIT only (recipe for overtraining).

Giving up because it feels "too slow" initially.

Specifications

Duration30-90m

Intensityall

Focusspecialized

Progressive Overload

Increase pace at same HR, or maintain same pace at lower HR. Both indicate improved aerobic capacity.

Setup Checklist

Calculate Zone 2 HR: ~180 minus age, or 60-70% max HR.

Choose low-impact modality (cycling, rowing, incline walking).

Maintain strict HR zone for 30-90 minutes.

Monitor with HR strap for accuracy.

WibeFit - Your Ultimate Fitness Companion