Energy Systems / Intervals

Aerobic Circuit (Zone 2)

Full body (aerobic/cardiovascular) Aerobic
i.

How to Do It

“Zone 2” simply means easy, steady cardio you can keep up for a long time. Pick 3–5 low-impact movements you can repeat comfortably — for example a brisk walk or easy march on the spot, an easy stationary bike or ride, light step-ups onto a low box, easy skipping rope, or gentle shadow-skating footwork — and move through them continuously for the prescribed time (usually 10–20 minutes), flowing from one to the next with little or no rest. Keep the effort easy: you should be able to hold a conversation, or breathe in and out through your nose, the entire time (about 60–70% of your maximum). If you get out of breath or have to stop, you are going too hard — slow down. Smooth, steady, and comfortable is the whole point: this builds your aerobic engine without beating up your joints.

ii.

Why It Works

Zone 2 training develops the aerobic base — increasing mitochondrial density, capillarization, and the heart’s stroke volume and ability to use fat for fuel; this low-intensity, high-volume work builds the cardiovascular engine that underpins recovery and endurance with minimal fatigue cost.

iii.

Hockey Transfer

Builds the aerobic base that drives recovery between shifts and across periods — the better the aerobic engine, the faster a player recovers and the longer they sustain high-quality efforts; foundational conditioning for repeated high-intensity hockey output.

iv.

Coaching Cues

  • "Easy, conversational pace"
  • "smooth and continuous"
  • "stay in the zone, nasal breathe"
v.

Common Mistakes

Drifting too high in intensity (out of Zone 2); stopping and starting; treating it as a hard workout

vi.

Progression / Regression

Progression

longer duration

Regression

shorter duration or lower intensity

vii.

Primary Muscles

Full body (aerobic/cardiovascular)
viii.

Energy System

Aerobic

Ready to train?

Put it to work
on the ice.

This exercise is part of a fully periodized 12-week off-ice program — built by a sport scientist who coaches at the national level.

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