The Vitruvian Protocol

System VI of XI

Cardiovascular

Heart & vessels

Why it matters

Cardiovascular disease is the leading cause of death worldwide. Cardiorespiratory fitness is one of the most powerful predictors of how long you will live, and one of the most trainable.

The protocol

Protocol 1

Do 150–300 minutes of moderate aerobic exercise a week, and build your VO₂max

Grade A · Strong evidence
How to do it
  • Aim for 150–300 minutes a week of moderate effort, such as brisk walking, cycling, swimming or rowing. At this pace you can talk but not sing. Or do 75–150 minutes of vigorous effort.
  • Spread it out, for example 30–45 minutes on five days.
  • Once a week, add harder intervals to raise peak fitness, for example 4 × 4 minutes hard with 3 minutes easy in between.
  • Progress gradually, and see a clinician first if you have chest symptoms or known heart disease.
Why it works
Aerobic training enlarges the heart's stroke volume, grows new capillaries, improves the flexibility of the vessel lining, and lowers resting blood pressure and heart rate.
The evidence
The WHO 2020 guidelines set 150–300 minutes of moderate or 75–150 minutes of vigorous activity a week for all adults1. In 122,007 patients who had treadmill tests, low fitness carried a mortality risk comparable to or greater than smoking, diabetes or coronary disease. There was no upper limit to the benefit of higher fitness2. The American Heart Association's Life's Essential 8 framework sets the targets below3.

What to measure

  • Blood pressure< 120/80Measure at home, seated, after 5 minutes of rest. Average several readings3.
  • Non-HDL cholesterol< 130 mg/dLTotal minus HDL cholesterol, the Life's Essential 8 target. ApoB is a closely related alternative3.
  • Estimated VO₂maxAbove age medianFrom a treadmill test or a validated wearable estimate. Moving up a fitness category matters most.

Avoid

  • Tobacco and vaping in any form.
  • Excess salt. Swapping regular salt for a potassium-enriched salt substitute cut stroke by 14% and death by 12% in a large randomized trial4.
  • Long sedentary days, even if you exercise. Movement throughout the day adds benefit on top of workouts.

Sources

  1. Bull FC, Al-Ansari SS, Biddle S, et al. World Health Organization 2020 guidelines on physical activity and sedentary behaviour. Br J Sports Med. 2020;54(24):1451–1462. doi.org/10.1136/bjsports-2020-102955
  2. Mandsager K, Harb S, Cremer P, et al. Association of cardiorespiratory fitness with long-term mortality among adults undergoing exercise treadmill testing. JAMA Netw Open. 2018;1(6):e183605. doi.org/10.1001/jamanetworkopen.2018.3605
  3. Lloyd-Jones DM, Allen NB, Anderson CAM, et al. Life's Essential 8: updating and enhancing the American Heart Association's construct of cardiovascular health. Circulation. 2022;146(5):e18–e43. doi.org/10.1161/CIR.0000000000001078
  4. Neal B, Wu Y, Feng X, et al. Effect of salt substitution on cardiovascular events and death. N Engl J Med. 2021;385(12):1067–1077. doi.org/10.1056/NEJMoa2105675

Educational content, not medical advice. These protocols summarize published evidence for healthy adults; they are not a substitute for care from a clinician who knows your history. Check with one before starting a new exercise program, changing medication, or if you are pregnant or managing a medical condition.