Zone 2 Exercise Dosage — What 5 Experts Recommend

Consensus Protocol

Dosage

3-4 hours per week is the consensus range
Attia: 3-4 sessions of 45-90 min (ideally 4 sessions)
Huberman: 200 min/week (~3
3 hrs)
Hyman: 150-200 min/week
Minimum effective dose: 3x 20-min sessions for beginners, building to 45+ min per session

Form

Any sustained cardio: cycling (Attia's preferred for data tracking), jogging, hiking, treadmill walking/incline, rowing, stairmaster, swimming, rucking
Stationary trainer recommended for consistency
Weight vest walks count (Huberman)

Timing

Sessions should be minimum 45 minutes to reach metabolic steady state (Attia)
Beginners start at 20-30 minutes and increase gradually
After 8-12 weeks, increase frequency before duration
Cardio before strength training in the same session to preserve strength quality (Attia)
Can be done fasted for potential mitochondrial adaptations (Patrick), though benefits are subtle

Notes

Measure intensity via the talk test (most practical), RPE (Attia's preferred), lactate meter (gold standard, target 1
7-2
0 mmol/L), or heart rate at 70-80% of true max (highly variable between individuals — the 180-minus-age formula often fails)
Zone 2 is zone-specific — train in the modality you want to improve
Pair with Zone 5/VO2 max training (1-2 sessions per week) for complete cardiovascular fitness
Metformin can lower Zone 2 thresholds (Attia/San-Millan)
Consistent frequency over years compounds like financial investment — mitochondrial health is built over decades

Expert Positions

Andrew Huberman

Strongly Recommends — 200 Min/Week

Peter Attia

Core Longevity Pillar — The Authority

Rhonda Patrick

Endorses as Aerobic Base

Bryan Johnson

Includes in Anti-Aging Protocol

Mark Hyman

Recommends for Mitochondrial Health

What Each Expert Says

Andrew Huberman

Strongly Recommends — 200 Min/Week

Huberman recommends 200 minutes per week of Zone 2 cardio across 11 videos, drawing heavily from his collaboration with Dr. Andy Galpin. His weekly template features a 60-75 minute Zone 2 anchor session on Sundays (jogging, hiking, or weight vest walks) supplemented by additional sessions through the week. He uniquely emphasizes Zone 2's brain health benefits — glymphatic clearance of metabolic waste, immune function support, glucose and insulin regulation, and hormone optimization. In his longevity supplements AMA, he explicitly ranks exercise (Zone 2 and VO2 max) far above any supplement for longevity impact.

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