Exercise
Regular exercise is extremely important for increasing healthy lifespan. It prevents chronic diseases and maintains cognitive function.
Recommended protocol
Optimal distribution between strength, cardio, and mobility for maximum longevity benefits.
3 days per week
3 days per week
150 min (conversation possible)
75 min (conversation impossible)
Source : Harvard Circulation 2022 — 300-600 min/week = optimal longevity zone (lien)
Zone 2 and VO₂ max: the aerobic foundation of longevity
Zone 2 is the most under-practiced training intensity — and probably the most important for longevity. It drives mitochondrial biogenesis and metabolic flexibility without significant recovery cost.
How to recognize Zone 2
- →60 to 70% of maximum heart rate
- →Blood lactate below 2 mmol/L
- →Talk test: full sentences possible, but with noticeable effort
- →Nasal breathing test: sustainable most of the time
Mechanism: the AMPK → PGC-1α cascade
At this intensity, slow type I muscle fibers dominate and fat oxidation peaks (FatMax ≈ 64% of VO₂ max). Activated AMPK triggers PGC-1α, the master regulator of mitochondrial biogenesis. The result: more mitochondria, better coupled, more efficient. It's the only training modality that acts directly on this hallmark of aging.
Practical protocol
- ·Duration: 45 to 90 minutes per session
- ·Frequency: 3 to 4 sessions per week
- ·Modes: moderate running, cycling, swimming, rowing, uphill walking
- ·Polarized 80 / 20 distribution: 80% weekly volume in Zone 2, 20% high intensity (HIIT, e.g. Norwegian 4×4)
VO₂ max — a major independent predictor
The top VO₂ max quintile is associated with a 5-fold reduction in mortality compared to the lowest quintile, independent of any other known risk factor. VO₂ max naturally declines about 10% per decade after age 30, but combined Zone 2 + HIIT training can offset or even reverse this slope. The Norwegian 4×4 protocol (four 4-minute reps at 85-95% HR max, 3 minutes active recovery) increases VO₂ max by +22% in 8 weeks.
Associated functional tests
- Gait speed. Target > 1.2 m/s. Each +0.1 m/s is associated with -12% all-cause mortality.
- Grip strength. Target > 50 kg (M) / > 32 kg (F). Independent mortality marker after age 50.
- Chair-stand test. Five chair stands without hand support in under 12 seconds — functional proxy for sarcopenia.
Read the full analysis : Zone 2: the invisible training that builds your mitochondria
The 7 key principles
Avoid injuries
Better to be careful. Injuries create long-term limitations that compromise your ability to move.
Create a habit
Daily exercise must become non-negotiable, automatic. Make it part of your identity.
Work the 4 pillars
Strength, cardio, balance, flexibility. Each pillar contributes differently to longevity.
Move throughout the day
5-10 min after each meal, stand up every 30 min. Prolonged sedentariness is an independent risk factor.
Don't get paralyzed
Avoid the pitfalls of over-optimization. What matters is moving, not having the perfect program.
Cycle-synced training
Follicular phase (Day 1 → Ovulation)
- Estrogen ↑ = better muscle synthesis
- Low body temperature = better performance
- Fast recovery
- Prioritize HIIT + intense strength training
- More frequent sessions possible
Luteal phase (Post-ovulation → Period)
- Progesterone ↑ = catabolism, slower recovery
- High body temperature = reduced performance
- Prioritize Zone 2 cardio + light strength
- Space out sessions, reduce intensity
- Late luteal phase: light training, yoga, mobility
Basal temperature (rise 0.5-1°C), clear and stretchy cervical mucus, tracking apps (Clue, Flo, Natural Cycles)
Exercise during pregnancy
- ≥150 min moderate activity per week (lien)
- ≥90 min strength training per week (adapted loads)
- Pelvic floor exercises recommended
- Avoid: contact sports, fall risk, lying on back position (3rd trimester)
- Consult your doctor to adapt intensity each trimester
Exercise and menopause
- Absolute priority: Strength training + HIIT
- Preserve muscle mass
- Maintain insulin sensitivity
- Protect bone density
- Weight-bearing exercises essential against osteoporosis
- Recommended frequency: 3-4x strength training/week
What the research says
Additional tips
Progressive overload
Gradually increase difficulty over time, especially in strength training. This is the key to progress.
HIIT rotation
Vary your HIIT workouts to prevent boredom and target different muscle groups.
Listen to your body
Adjust intensity or duration based on how you feel. Recovery is as important as effort.
3rd strength session
If time allows, add a 3rd strength session per week by replacing a cardio day or incorporating it into a lower-intensity day.