People move less than at any point in history — and suffer from more chronic disease than ever before. That correlation is no coincidence. Movement isn't just about calories and muscle. It is a biological signal that governs the expression of genes, hormones, inflammatory markers, neuroplasticity and lifespan itself.
How to read the numbers: Target = the value we aim for · Term = a key term or marker worth knowing
WHO weekly minimum
The WHO recommends at least 150 minutes of moderate activity per week for adults – for example brisk walking during which you can still talk. In practice: split it into 30 minutes five times a week; shorter bouts count too.
Per week for longevity
The WHO also recommends strength training at least twice a week – it helps preserve muscle mass and strength, which naturally decline with age and are linked to independence later in life. Start with bodyweight exercises and increase the load gradually.
Cardio health #1
VO₂max reflects the maximum amount of oxygen your body can use, and in large observational studies it is one of the strongest markers of longevity. You can improve it with regular endurance exercise, occasionally adding short high-intensity intervals.
Intensity zones — why most people train inefficiently
Most people move in the "grey zone" — too intense for recovery, too easy for adaptation. Polarised training — 80% low intensity, 20% high — delivers better results for both longevity and performance.
Strength as an investment in your future
Sarcopenia — the loss of muscle mass with age — begins after thirty and, without active intervention, continues for the rest of your life. Every extra kilogram of muscle means a higher basal metabolic rate, better insulin sensitivity and a lower risk of falls and fractures in old age.
Walking speed is one of the most reliable predictors of longevity. People who walk faster than 1.0 m/s in midlife statistically live significantly longer.
Movement and the brain
Aerobic exercise stimulates the production of BDNF — brain-derived neurotrophic factor. It is quite literally fertiliser for your neurons. A single 20-minute brisk walk raises BDNF and sharpens cognitive performance for 2–3 hours.
